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All questions of Minerals and Energy Resources for Class 10 Exam
Which one of the following metals can be obtained from Bauxite?- a)Aluminium
- b)Copper
- c)Iron
- d)Silver
Correct answer is option 'A'. Can you explain this answer?
Which one of the following metals can be obtained from Bauxite?
a)
Aluminium
b)
Copper
c)
Iron
d)
Silver
|
|
Ram Mohith answered |
Bauxite (Al2O3.nH2O) is an oxide ore of Aluminium...
Which one of the following states is the leading producer of Iron ore?- a)Chhattisgarh
- b)Jharkhand
- c)Karnataka
- d)Madhya Pradesh
Correct answer is option 'C'. Can you explain this answer?
Which one of the following states is the leading producer of Iron ore?
a)
Chhattisgarh
b)
Jharkhand
c)
Karnataka
d)
Madhya Pradesh
|
Krishna Iyer answered |
Karnataka is the largest producer and accounts for nearly one-fourth of the total iron ore produced in India.
Which place in India is ideal for utilising tidal energy?
- a)Gulf of Kachchh
- b)Gulf of Khambhat
- c)Both A and B
- d)None of these
Correct answer is option 'C'. Can you explain this answer?
Which place in India is ideal for utilising tidal energy?
a)
Gulf of Kachchh
b)
Gulf of Khambhat
c)
Both A and B
d)
None of these
|
Arshiya Mehta answered |
In India, the Gulf of Kachchh, provides ideal conditions for utilising tidal energy. A 900 mw tidal energy power plant is set up here by the National Hydropower Corporation.
Which out of the following is a non-conventional source of energy? - a)Atomic energy
- b)Firewood
- c)Coal
- d)Natural gas
Correct answer is option 'A'. Can you explain this answer?
Which out of the following is a non-conventional source of energy?
a)
Atomic energy
b)
Firewood
c)
Coal
d)
Natural gas
|
|
Madhu Sulaniya answered |
The sources of energy which are exhaustible and being produced continuously in nature are called nonconventional energy or renewable sources of energy. atomic energy is the only option.
Which one of the following materials is metallic?
- a)Iron
- b)Coal
- c)Petroleum
- d)Natural gas
Correct answer is option 'A'. Can you explain this answer?
Which one of the following materials is metallic?
a)
Iron
b)
Coal
c)
Petroleum
d)
Natural gas
|
|
Rajat Singh answered |
Salt is said to be non- metallic because they don't have any properties of metals except positive ions from metals . They have mostly properties of non metallic substances so this statement is legal.
To which of the following categories of resources, do minerals belong ?- a)Renewable and replenishable
- b)Flow
- c)Non-renewable and finite
- d)None of the above
Correct answer is option 'C'. Can you explain this answer?
To which of the following categories of resources, do minerals belong ?
a)
Renewable and replenishable
b)
Flow
c)
Non-renewable and finite
d)
None of the above
|
|
Sharad Chavan answered |
Minerals are used for a single time and they are non renewable and finite...so we have to use it efficiently...
hence the correct answer is C.
hence the correct answer is C.
Which of the following is a noncommercial source of energy widely used in rural areas?- a)Coal
- b)Firewood
- c)Natural gas
- d)Electricity
Correct answer is option 'B'. Can you explain this answer?
Which of the following is a noncommercial source of energy widely used in rural areas?
a)
Coal
b)
Firewood
c)
Natural gas
d)
Electricity
|
|
Sharad Chavan answered |
It include fuels such as firewood, cattle dung and agricultural wastes, which are traditionally gathered...
so the correct answer is B.
so the correct answer is B.
The Monazite sands of Kerala are rich in: - a)coal
- b)uranium
- c)thorium
- d)platinum
Correct answer is option 'C'. Can you explain this answer?
a)
coal
b)
uranium
c)
thorium
d)
platinum
|
Varun Kapoor answered |
Due to the alpha decay of thorium and uranium, monazite contains a significant amount of helium, which can be extracted by heating. Monazite is an important ore for thorium, lanthanum, and cerium. It is often found in placer deposits. India, Madagascar, and South Africa have large deposits of monazite sands.
What is low grade brown coal called?- a)Bituminous
- b)Anthracite
- c)Lignite
- d)None of these
Correct answer is option 'C'. Can you explain this answer?
What is low grade brown coal called?
a)
Bituminous
b)
Anthracite
c)
Lignite
d)
None of these
|
Aditya Kumar answered |
Lignite, often referred to as brown coal, is a soft, brown, combustible, sedimentary rock formed from naturally compressed peat. It is considered the lowest rank of coal due to its relatively low heat content.
Study about which of the characteristics of minerals is not a concern of geographers?- a)Minerals as part of the earth’s crust for better understanding of landforms.
- b)Distribution of minerals
- c)Economic activities associated with minerals
- d)Formation, age and physical and chemical composition of minerals
Correct answer is option 'D'. Can you explain this answer?
Study about which of the characteristics of minerals is not a concern of geographers?
a)
Minerals as part of the earth’s crust for better understanding of landforms.
b)
Distribution of minerals
c)
Economic activities associated with minerals
d)
Formation, age and physical and chemical composition of minerals
|
Rohit Jain answered |
The correct option is D.
These are the physical properties of the minerals and thus are not concerned with the geography.
These are the physical properties of the minerals and thus are not concerned with the geography.
Which out of the following is derived from the ocean waters? - a)Limestone
- b)Sandstone
- c)Cobalt
- d)Bromine
Correct answer is option 'D'. Can you explain this answer?
a)
Limestone
b)
Sandstone
c)
Cobalt
d)
Bromine
|
|
Rahul Desai answered |
The most recoverable form of bromine is from soluble salts found in seawater, salt lakes, inland seas and brine wells. Sea water contains bromine in about 65 parts per million (ppm) but bromine is found in much higher concentrations (2,500 to 10,000 ppm) in inland seas and brine wells.
Which mineral is used for generating atomic or nuclear power? - a)Coal
- b)Bauxite
- c)Uranium
- d)Copper
Correct answer is option 'C'. Can you explain this answer?
Which mineral is used for generating atomic or nuclear power?
a)
Coal
b)
Bauxite
c)
Uranium
d)
Copper
|
|
Alok Verma answered |
C is the correct option.Uranium and Thorium, which are available in Jharkhand and the Aravalli ranges of Rajasthan are used for generating atomic or nuclear power. The Monazite sands of Kerala is also rich in Thorium.
What are the Khetri mines famous for?- a)Coal
- b)Copper
- c)Iron
- d)Gold
Correct answer is option 'B'. Can you explain this answer?
What are the Khetri mines famous for?
a)
Coal
b)
Copper
c)
Iron
d)
Gold
|
Sneha Shah answered |
B is the correct option.Khetri is actually two towns, "Khetri Town" founded by Raja Khet Singhji Nirwan and "Khetri Nagar" which is about 10 km away from Khetri. Khetri Nagar, well known for its “Copper” Project, was built by and is under the control of Hindustan Copper Limited, a public sector undertaking under the Government of India.
Metals like gold, silver and platinum are known as which of the following?- a)Ferrous minerals
- b)Non-ferrous minerals
- c)Non-metallic minerals
- d)Precious minerals
Correct answer is option 'D'. Can you explain this answer?
Metals like gold, silver and platinum are known as which of the following?
a)
Ferrous minerals
b)
Non-ferrous minerals
c)
Non-metallic minerals
d)
Precious minerals
|
Isha Pillai answered |
Metals like gold, silver, and platinum are known as **precious minerals**. Let's understand why this is the correct answer.
**Ferrous minerals**:
- Ferrous minerals are those that contain iron as their main component, such as iron ore and manganese.
- Gold, silver, and platinum do not contain iron as their main component, so they cannot be classified as ferrous minerals.
- Therefore, option 'A' is incorrect.
**Non-ferrous minerals**:
- Non-ferrous minerals are those that do not contain iron as their main component.
- Gold, silver, and platinum fall under this category as they do not contain iron.
- However, not all non-ferrous minerals are precious. There are other non-ferrous minerals like copper, zinc, aluminum, etc. that are not classified as precious minerals.
- Therefore, option 'B' is incorrect.
**Non-metallic minerals**:
- Non-metallic minerals are those that do not contain metals.
- Gold, silver, and platinum are metals, so they cannot be classified as non-metallic minerals.
- Therefore, option 'C' is incorrect.
**Precious minerals**:
- Precious minerals are rare and valuable minerals that are highly sought after for their beauty, rarity, and economic value.
- Gold, silver, and platinum are considered precious minerals due to their aesthetic appeal, durability, and use in various industries such as jewelry, electronics, and chemical catalysts.
- These minerals are often associated with luxury and have a high market value.
- Therefore, option 'D' is the correct answer.
In conclusion, metals like gold, silver, and platinum are classified as precious minerals because of their rarity, value, and wide range of applications.
**Ferrous minerals**:
- Ferrous minerals are those that contain iron as their main component, such as iron ore and manganese.
- Gold, silver, and platinum do not contain iron as their main component, so they cannot be classified as ferrous minerals.
- Therefore, option 'A' is incorrect.
**Non-ferrous minerals**:
- Non-ferrous minerals are those that do not contain iron as their main component.
- Gold, silver, and platinum fall under this category as they do not contain iron.
- However, not all non-ferrous minerals are precious. There are other non-ferrous minerals like copper, zinc, aluminum, etc. that are not classified as precious minerals.
- Therefore, option 'B' is incorrect.
**Non-metallic minerals**:
- Non-metallic minerals are those that do not contain metals.
- Gold, silver, and platinum are metals, so they cannot be classified as non-metallic minerals.
- Therefore, option 'C' is incorrect.
**Precious minerals**:
- Precious minerals are rare and valuable minerals that are highly sought after for their beauty, rarity, and economic value.
- Gold, silver, and platinum are considered precious minerals due to their aesthetic appeal, durability, and use in various industries such as jewelry, electronics, and chemical catalysts.
- These minerals are often associated with luxury and have a high market value.
- Therefore, option 'D' is the correct answer.
In conclusion, metals like gold, silver, and platinum are classified as precious minerals because of their rarity, value, and wide range of applications.
Which of the following minerals is an important raw material in the iron and steel industry apart from iron ?- a)Mica
- b)Aluminium
- c)Gypsum
- d)Manganese
Correct answer is option 'D'. Can you explain this answer?
Which of the following minerals is an important raw material in the iron and steel industry apart from iron ?
a)
Mica
b)
Aluminium
c)
Gypsum
d)
Manganese
|
|
Pooja Shah answered |
The correct option is Option D.
When iron ore is converted into iron, manganese removes oxygen and sulfur. Also, it is an essential alloy that helps to convert iron into steel. Hence, manganese is an important raw material for the iron and steel industry.
When iron ore is converted into iron, manganese removes oxygen and sulfur. Also, it is an essential alloy that helps to convert iron into steel. Hence, manganese is an important raw material for the iron and steel industry.
What is 'Rat hole' mining? - a)Mining in places where there are lots of rats
- b)Mining done by family members in the form of a long narrow tunnel
- c)Mining that kills rats
- d)None of these
Correct answer is option 'B'. Can you explain this answer?
What is 'Rat hole' mining?
a)
Mining in places where there are lots of rats
b)
Mining done by family members in the form of a long narrow tunnel
c)
Mining that kills rats
d)
None of these
|
|
Arun Kumar answered |
Rat-hole mining is a primitive and hazardous method of mining for coal, with tunnels that are only 3-4 feet in diameter (hence, rat-hole), leading to pits ranging from 5-100 sq. mt deep.
Which of the following minerals is indispensable for electric and electronic industries?- a)Iron
- b)Nickel
- c)Manganese
- d)Mica
Correct answer is option 'D'. Can you explain this answer?
Which of the following minerals is indispensable for electric and electronic industries?
a)
Iron
b)
Nickel
c)
Manganese
d)
Mica
|
|
Nidhi Solanki answered |
Correct answer is option D.
Mica is an indispensable mineral for electrical and electronics industries because it is a non-conductor of electricity,has excellent di-electric strength, low power loss factor, insulating properties and resistance to high voltage.
Mica is an indispensable mineral for electrical and electronics industries because it is a non-conductor of electricity,has excellent di-electric strength, low power loss factor, insulating properties and resistance to high voltage.
In which kind of rocks are the minerals deposited and accumulated in the strata's?- a)Igneous rocks
- b)Metamorphic rocks
- c)Sedimentary rocks
- d)None of these
Correct answer is option 'C'. Can you explain this answer?
In which kind of rocks are the minerals deposited and accumulated in the strata's?
a)
Igneous rocks
b)
Metamorphic rocks
c)
Sedimentary rocks
d)
None of these
|
|
Arun Khatri answered |
C is the correct option.Minerals are found in layers or strata in sedimentary rocks. Minerals are accumulated in horizontal strata after being exposed to high heat and pressure for a long period of time. Coal, iron ore, gypsum, potash salt etc are formed in this way.
Read the extract and answer the questions that follows:In India, coal is the most abundantly available fossil fuel. It provides a substantial part of the nation’s energy needs. It is used for power generation, to supply energy to industry as well as for domestic needs. India is highly dependent on coal for meeting its commercial energy requirements. As you are already aware that coal is formed due the compression of plant material over millions of years. Coal, therefore, is found in a variety of forms depending on the degrees of compression and the depth and time of burial. Decaying plants in swamps produce peat which has a low carbon and high moisture contents and low heating capacity. Lignite is a low grade brown coal, which is soft with high moisture content. The principal lignite reserves are in Neyveli in Tamil Nadu and are used for generation of electricity. Coal that has been buried deep and subjected to increased temperatures is bituminous coal. It is the most popular coal in commercial use. Metallurgical coal is high grade bituminous coal which has a special value for smelting iron in blast furnaces. Anthracite is the highest quality hard coal. In India coal occurs in rock series of two main geological ages, namely Gondwana, a little over 200 million years in age and in tertiary deposits which are only about 55 million years old. The major resources of Gondwana coal, which are metallurgical coal, are located in Damodar valley (West Bengal-Jharkhand). Jharia, Raniganj, Bokaro are important coalfields. The Godavari, Mahanadi, Son and Wardha valleys also contain coal deposits. Tertiary coals occur in the north eastern states of Meghalaya, Assam, Arunachal Pradesh and Nagaland. Remember coal is a bulky material, which loses weight on use as it is reduced to ash. Hence, heavy industries and thermal power stations are located on or near the coalfields.Answer the following MCQs by choosing the most appropriate option.Q. Where are the principal lignite reserves?- a)Kochi, Kerala
- b)Neyveli ,Tamil Nadu
- c)Hampi, Karnataka
- d)Idukki, Kerala
Correct answer is option 'B'. Can you explain this answer?
Read the extract and answer the questions that follows:
In India, coal is the most abundantly available fossil fuel. It provides a substantial part of the nation’s energy needs. It is used for power generation, to supply energy to industry as well as for domestic needs. India is highly dependent on coal for meeting its commercial energy requirements. As you are already aware that coal is formed due the compression of plant material over millions of years. Coal, therefore, is found in a variety of forms depending on the degrees of compression and the depth and time of burial. Decaying plants in swamps produce peat which has a low carbon and high moisture contents and low heating capacity. Lignite is a low grade brown coal, which is soft with high moisture content. The principal lignite reserves are in Neyveli in Tamil Nadu and are used for generation of electricity. Coal that has been buried deep and subjected to increased temperatures is bituminous coal. It is the most popular coal in commercial use. Metallurgical coal is high grade bituminous coal which has a special value for smelting iron in blast furnaces. Anthracite is the highest quality hard coal. In India coal occurs in rock series of two main geological ages, namely Gondwana, a little over 200 million years in age and in tertiary deposits which are only about 55 million years old. The major resources of Gondwana coal, which are metallurgical coal, are located in Damodar valley (West Bengal-Jharkhand). Jharia, Raniganj, Bokaro are important coalfields. The Godavari, Mahanadi, Son and Wardha valleys also contain coal deposits. Tertiary coals occur in the north eastern states of Meghalaya, Assam, Arunachal Pradesh and Nagaland. Remember coal is a bulky material, which loses weight on use as it is reduced to ash. Hence, heavy industries and thermal power stations are located on or near the coalfields.
Answer the following MCQs by choosing the most appropriate option.
Q. Where are the principal lignite reserves?
a)
Kochi, Kerala
b)
Neyveli ,Tamil Nadu
c)
Hampi, Karnataka
d)
Idukki, Kerala
|
|
Anita Menon answered |
Lignite is a low grade brown coal, which is soft with high moisture content. The principal lignite reserves are in Neyveli in Tamil Nadu and are used for generation of electricity.
Which of the following regions of India is almost devoid of economic minerals?- a)The Himalayan belt
- b)The alluvial plains of North India
- c)The Thar desert
- d)The Peninsular plateau
Correct answer is option 'B'. Can you explain this answer?
Which of the following regions of India is almost devoid of economic minerals?
a)
The Himalayan belt
b)
The alluvial plains of North India
c)
The Thar desert
d)
The Peninsular plateau
|
|
Alok Verma answered |
The correct answer is B as The most striking feature of the Indian minerals is their uneven distribution. Some areas are very rich in minerals while some others are completely devoid of this valuable asset.Minerals are rarely found in Northern plains of India.
India is critically deficient in the reserve and production of which of the following minerals?- a)Iron ore
- b)Manganese
- c)Copper
- d)Coal
Correct answer is option 'C'. Can you explain this answer?
India is critically deficient in the reserve and production of which of the following minerals?
a)
Iron ore
b)
Manganese
c)
Copper
d)
Coal
|
Shraddha Tiwari answered |
India is critically deficient in the reserve and production of copper.
- **Copper Reserve**: India has limited reserves of copper compared to other minerals. The country's total copper reserves are estimated to be around 410 million tonnes, which is relatively low compared to its iron ore and coal reserves. This scarcity of copper reserves in India affects its production capacity.
- **Copper Production**: India's copper production is significantly lower compared to its demand. The country heavily relies on imports to meet its copper requirements. The domestic production of copper in India is primarily from the states of Rajasthan, Jharkhand, and Madhya Pradesh. However, the production output is not sufficient to meet the demand, leading to a critical deficiency in copper supply.
- **Import Dependence**: India's copper demand is mainly driven by sectors such as electrical, electronics, construction, and infrastructure. The increasing demand for copper in these sectors has resulted in a rising import dependence. India imports a significant amount of copper from countries like Chile, Australia, and Zambia to fulfill its domestic needs.
- **Impact on Economy**: The critical deficiency in copper reserves and production impacts India's economy in several ways. Firstly, the heavy reliance on imports increases the trade deficit, as India has to spend a substantial amount on importing copper. This puts pressure on the country's foreign exchange reserves. Additionally, fluctuations in global copper prices can directly affect the cost of imported copper, impacting various industries that rely on copper for their operations.
- **Challenges and Future Outlook**: India needs to address the deficiency in copper reserves and production to reduce import dependence and strengthen its domestic copper industry. This can be achieved through exploration and development of new copper deposits, adoption of advanced mining technologies, and promoting investment in the copper mining sector. The government should also focus on encouraging domestic copper production and reducing reliance on imports through policy interventions and incentives.
In conclusion, India's critical deficiency in the reserve and production of copper has significant implications for its economy. Addressing this deficiency and promoting domestic copper production is crucial to reduce import dependence and strengthen the country's copper industry.
- **Copper Reserve**: India has limited reserves of copper compared to other minerals. The country's total copper reserves are estimated to be around 410 million tonnes, which is relatively low compared to its iron ore and coal reserves. This scarcity of copper reserves in India affects its production capacity.
- **Copper Production**: India's copper production is significantly lower compared to its demand. The country heavily relies on imports to meet its copper requirements. The domestic production of copper in India is primarily from the states of Rajasthan, Jharkhand, and Madhya Pradesh. However, the production output is not sufficient to meet the demand, leading to a critical deficiency in copper supply.
- **Import Dependence**: India's copper demand is mainly driven by sectors such as electrical, electronics, construction, and infrastructure. The increasing demand for copper in these sectors has resulted in a rising import dependence. India imports a significant amount of copper from countries like Chile, Australia, and Zambia to fulfill its domestic needs.
- **Impact on Economy**: The critical deficiency in copper reserves and production impacts India's economy in several ways. Firstly, the heavy reliance on imports increases the trade deficit, as India has to spend a substantial amount on importing copper. This puts pressure on the country's foreign exchange reserves. Additionally, fluctuations in global copper prices can directly affect the cost of imported copper, impacting various industries that rely on copper for their operations.
- **Challenges and Future Outlook**: India needs to address the deficiency in copper reserves and production to reduce import dependence and strengthen its domestic copper industry. This can be achieved through exploration and development of new copper deposits, adoption of advanced mining technologies, and promoting investment in the copper mining sector. The government should also focus on encouraging domestic copper production and reducing reliance on imports through policy interventions and incentives.
In conclusion, India's critical deficiency in the reserve and production of copper has significant implications for its economy. Addressing this deficiency and promoting domestic copper production is crucial to reduce import dependence and strengthen the country's copper industry.
The Koderma-Gaya-Hazaribagh belt of Jharkhand is a leading producer of: - a)copper
- b)manganese
- c)iron ore
- d)mica
Correct answer is option 'D'. Can you explain this answer?
The Koderma-Gaya-Hazaribagh belt of Jharkhand is a leading producer of:
a)
copper
b)
manganese
c)
iron ore
d)
mica
|
Shounak Desai answered |
D is the correct option.Koderma district is rich in minerals. The Koderma district and the Lokai-Indarwa area covers the southern part of Great Mica-Belt of Jharkhand, Bihar, and India.
Koderma in Jharkhand is the leading producer of which one of the following minerals?- a)Bauxite
- b)Mica
- c)Iron ore
- d)Copper
Correct answer is option 'B'. Can you explain this answer?
Koderma in Jharkhand is the leading producer of which one of the following minerals?
a)
Bauxite
b)
Mica
c)
Iron ore
d)
Copper
|
|
Nidhi Solanki answered |
Koderma-Gaya-Hazaribagh belt of Jharkhand is the leading producer of mica.
Which of the following is the finest quality of iron ore with magnetic qualities ?- a)Magnetite
- b)Haematite
- c)Siderite
- d)Limonite
Correct answer is option 'A'. Can you explain this answer?
Which of the following is the finest quality of iron ore with magnetic qualities ?
a)
Magnetite
b)
Haematite
c)
Siderite
d)
Limonite
|
|
Poonam Reddy answered |
Magnetite is the finest iron ore with a very high content of iron up to 70 per cent. It has excellent magnetic qualities, especially valuable in the electrical industry. Hematite ore is the most important industrial iron ore in terms of the quantity used, but has a slightly lower iron content than magnetite. (50-60 per cent).
Where do minerals occur in sedimentary rocks?- a)Cracks
- b)Crevices
- c)Faults
- d)Beds or layers
Correct answer is option 'D'. Can you explain this answer?
Where do minerals occur in sedimentary rocks?
a)
Cracks
b)
Crevices
c)
Faults
d)
Beds or layers
|
Indu Gupta answered |
Where do minerals occur in sedimentary rocks?
Minerals can occur in sedimentary rocks in various locations within the rock structure. The most common location is in the beds or layers of the sedimentary rock. Here are the detailed explanations:
Beds or layers:
- Sedimentary rocks are formed by the accumulation and cementation of sediment layers over time. Minerals can become trapped within these layers during the sedimentation process.
- As sediment is deposited and compacted, minerals may settle and become cemented together, forming the solid rock structure.
- The minerals can vary in composition and size, depending on the specific type of sedimentary rock and the environment in which it was formed.
Other possible locations where minerals may occur in sedimentary rocks include:
Cracks:
- Sedimentary rocks can have cracks or fractures that form after their initial formation.
- Minerals can precipitate or fill these cracks, creating veins or mineral-filled fractures within the rock.
Crevices:
- Similar to cracks, crevices or fissures in sedimentary rocks can provide spaces for minerals to accumulate.
- These crevices may be formed by various geological processes, such as tectonic activity or weathering.
Faults:
- Faults are fractures or breaks in the Earth's crust where rocks on either side have moved relative to each other.
- Minerals can be deposited along fault lines, forming mineral veins that cut across the sedimentary rock layers.
In summary, minerals in sedimentary rocks primarily occur in the beds or layers of the rock. However, they can also be found in cracks, crevices, and faults within the rock structure. These minerals provide valuable information about the geological history and processes that have occurred in the formation of sedimentary rocks.
Minerals can occur in sedimentary rocks in various locations within the rock structure. The most common location is in the beds or layers of the sedimentary rock. Here are the detailed explanations:
Beds or layers:
- Sedimentary rocks are formed by the accumulation and cementation of sediment layers over time. Minerals can become trapped within these layers during the sedimentation process.
- As sediment is deposited and compacted, minerals may settle and become cemented together, forming the solid rock structure.
- The minerals can vary in composition and size, depending on the specific type of sedimentary rock and the environment in which it was formed.
Other possible locations where minerals may occur in sedimentary rocks include:
Cracks:
- Sedimentary rocks can have cracks or fractures that form after their initial formation.
- Minerals can precipitate or fill these cracks, creating veins or mineral-filled fractures within the rock.
Crevices:
- Similar to cracks, crevices or fissures in sedimentary rocks can provide spaces for minerals to accumulate.
- These crevices may be formed by various geological processes, such as tectonic activity or weathering.
Faults:
- Faults are fractures or breaks in the Earth's crust where rocks on either side have moved relative to each other.
- Minerals can be deposited along fault lines, forming mineral veins that cut across the sedimentary rock layers.
In summary, minerals in sedimentary rocks primarily occur in the beds or layers of the rock. However, they can also be found in cracks, crevices, and faults within the rock structure. These minerals provide valuable information about the geological history and processes that have occurred in the formation of sedimentary rocks.
Which of the following energy sources are not the conventional sources of energy ?- a)Firewood, cattle dung cake
- b)Atomic energy, biogas, solar energy
- c)Coal, petroleum, natural gas
- d)Hydel and thermal electricity
Correct answer is option 'B'. Can you explain this answer?
Which of the following energy sources are not the conventional sources of energy ?
a)
Firewood, cattle dung cake
b)
Atomic energy, biogas, solar energy
c)
Coal, petroleum, natural gas
d)
Hydel and thermal electricity
|
|
Rajveer Chaudhary answered |
The correct option is B.
Energy generated by using wind, solar, small hydro, tides, geothermal heat and biomass is known as non-conventional energy. All these sources are renewable processes of energy generation and do not cause environmental pollution.
Energy generated by using wind, solar, small hydro, tides, geothermal heat and biomass is known as non-conventional energy. All these sources are renewable processes of energy generation and do not cause environmental pollution.
Which of the following sedimentary minerals is formed as a result of evaporation, especially in arid regions?- a)Coal
- b)Potash salt
- c)Iron ore
- d)Sulphur
Correct answer is option 'B'. Can you explain this answer?
Which of the following sedimentary minerals is formed as a result of evaporation, especially in arid regions?
a)
Coal
b)
Potash salt
c)
Iron ore
d)
Sulphur
|
|
Nitu Gupta answered |
Gypsum, potash salt,sodium salt are formed as a result of evaporation especially in arid regions. correct option is b.
In which kind of rocks are the minerals deposited and accumulated in the strata?- a)Igneous rocks
- b)Metamorphic rocks
- c)Sedimentary rocks
- d)None of these
Correct answer is option 'C'. Can you explain this answer?
In which kind of rocks are the minerals deposited and accumulated in the strata?
a)
Igneous rocks
b)
Metamorphic rocks
c)
Sedimentary rocks
d)
None of these
|
Crafty Classes answered |
Answer:
The minerals are deposited and accumulated in the strata of sedimentary rocks. Here is a detailed explanation:
Sedimentary Rocks:
- Sedimentary rocks are formed by the deposition and accumulation of sediments (such as sand, mud, and organic materials) over time.
- These sediments are derived from the weathering and erosion of pre-existing rocks and are transported by water, wind, or ice to a new location where they settle and accumulate.
- As the sediments accumulate, they undergo compaction and cementation, which turns them into solid rock.
- The minerals within the sediments become part of the rock's composition and are preserved within the layers or strata of the sedimentary rock.
Importance of Sedimentary Rocks:
- Sedimentary rocks contain valuable resources such as coal, oil, and natural gas, which are formed from the accumulation and transformation of organic matter.
- They also provide important clues about Earth's history, as the layers of sedimentary rocks can record information about past environments, climate, and the evolution of life.
In conclusion, minerals are deposited and accumulated in the strata of sedimentary rocks.
The minerals are deposited and accumulated in the strata of sedimentary rocks. Here is a detailed explanation:
Sedimentary Rocks:
- Sedimentary rocks are formed by the deposition and accumulation of sediments (such as sand, mud, and organic materials) over time.
- These sediments are derived from the weathering and erosion of pre-existing rocks and are transported by water, wind, or ice to a new location where they settle and accumulate.
- As the sediments accumulate, they undergo compaction and cementation, which turns them into solid rock.
- The minerals within the sediments become part of the rock's composition and are preserved within the layers or strata of the sedimentary rock.
Importance of Sedimentary Rocks:
- Sedimentary rocks contain valuable resources such as coal, oil, and natural gas, which are formed from the accumulation and transformation of organic matter.
- They also provide important clues about Earth's history, as the layers of sedimentary rocks can record information about past environments, climate, and the evolution of life.
In conclusion, minerals are deposited and accumulated in the strata of sedimentary rocks.
Read the extract and answer the questions that follows:Minerals are usually found in “ores”. The term ore is used to describe an accumulation of any mineral mixed with other elements. The mineral content of the ore must be in sufficient concentration to make its extraction commercially viable. The type of formation or structure in which they are found determines the relative ease with which mineral ores may be mined. This also determines the cost of extraction. It is, therefore, important for us to understand the main types of formations in which minerals occur.Minerals generally occur in these forms:(i) In igneous and metamorphic rocks minerals may occur in the cracks, crevices, faults or joints. The smaller occurrences are called veins and the larger are called lodes. In most cases, they are formed when minerals in liquid/molten and gaseous forms are forced upward through cavities towards the earth’s surface. They cool and solidify as they rise. Major metallic minerals like tin, copper, zinc and lead etc. are obtained from veins and lodes.(ii) In sedimentary rocks a number of minerals occur in beds or layers. They have been formed as a result of deposition, accumulation and concentration in horizontal strata. Coal and some forms of iron ore have been concentrated as a result of long periods under great heat and pressure. Another group of sedimentary minerals include gypsum, potash salt and sodium salt. These are formed as a result of evaporation especially in arid regions.(iii) Another mode of formation involves the decomposition of surface rocks and the removal of soluble constituents, leaving a residual mass of weathered material containing ores. Bauxite is formed this way.(iv) Certain minerals may occur as alluvial deposits in sands of valley floors and the base of hills. These deposits are called ‘placer deposits’ and generally contain minerals, which are not corroded by water. Gold, silver, tin and platinum are most important among such minerals.(v) The ocean waters contain vast quantities of minerals, but most of these are too widely diffused to be of economic significance. However, common salt, magnesium and bromine are largely derived from ocean waters. The ocean beds, too, are rich in manganese nodules.Answer the following MCQs by choosing the most appropriate option.Q. In igneous and metamorphic rocks, minerals may occur in the:- a)gaps
- b)cracks
- c)deposits
- d)chains
Correct answer is option 'B'. Can you explain this answer?
Read the extract and answer the questions that follows:
Minerals are usually found in “ores”. The term ore is used to describe an accumulation of any mineral mixed with other elements. The mineral content of the ore must be in sufficient concentration to make its extraction commercially viable. The type of formation or structure in which they are found determines the relative ease with which mineral ores may be mined. This also determines the cost of extraction. It is, therefore, important for us to understand the main types of formations in which minerals occur.
Minerals generally occur in these forms:
(i) In igneous and metamorphic rocks minerals may occur in the cracks, crevices, faults or joints. The smaller occurrences are called veins and the larger are called lodes. In most cases, they are formed when minerals in liquid/molten and gaseous forms are forced upward through cavities towards the earth’s surface. They cool and solidify as they rise. Major metallic minerals like tin, copper, zinc and lead etc. are obtained from veins and lodes.
(ii) In sedimentary rocks a number of minerals occur in beds or layers. They have been formed as a result of deposition, accumulation and concentration in horizontal strata. Coal and some forms of iron ore have been concentrated as a result of long periods under great heat and pressure. Another group of sedimentary minerals include gypsum, potash salt and sodium salt. These are formed as a result of evaporation especially in arid regions.
(iii) Another mode of formation involves the decomposition of surface rocks and the removal of soluble constituents, leaving a residual mass of weathered material containing ores. Bauxite is formed this way.
(iv) Certain minerals may occur as alluvial deposits in sands of valley floors and the base of hills. These deposits are called ‘placer deposits’ and generally contain minerals, which are not corroded by water. Gold, silver, tin and platinum are most important among such minerals.
(v) The ocean waters contain vast quantities of minerals, but most of these are too widely diffused to be of economic significance. However, common salt, magnesium and bromine are largely derived from ocean waters. The ocean beds, too, are rich in manganese nodules.
Answer the following MCQs by choosing the most appropriate option.
Q. In igneous and metamorphic rocks, minerals may occur in the:
a)
gaps
b)
cracks
c)
deposits
d)
chains
|
|
Kiran Mehta answered |
In igneous and metamorphic rocks minerals may occur in the cracks, crevices, faults, or joints. The smaller occurrences are called veins and the larger are called lodes. In most cases, they are formed when minerals in liquid/ molten and gaseous forms are forced upward through cavities towards the earth's surface.
Minerals need to be conserved because
(i) They are renewable.
(ii) They are depleting rapidly.
(iii) They are needed for the country’s industrial development.
(iv) Their formation is very fast.- a)(i) and (ii)
- b)(ii) and (iii)
- c)(iii) and (iv)
- d)All of the above
Correct answer is option 'B'. Can you explain this answer?
Minerals need to be conserved because
(i) They are renewable.
(ii) They are depleting rapidly.
(iii) They are needed for the country’s industrial development.
(iv) Their formation is very fast.
(i) They are renewable.
(ii) They are depleting rapidly.
(iii) They are needed for the country’s industrial development.
(iv) Their formation is very fast.
a)
(i) and (ii)
b)
(ii) and (iii)
c)
(iii) and (iv)
d)
All of the above
|
Amar agrawal answered |
(iii) They are needed for the country
Minerals are essential for various industrial processes, manufacturing, construction, and energy production. They are used to make products that are essential for our daily lives, such as vehicles, electronics, and infrastructure. Without minerals, the country's economy and development would be severely affected.
Additionally, minerals are not easily renewable resources. They are formed over millions of years through geological processes, making their replenishment extremely slow compared to their rate of consumption. Once minerals are extracted and used, they cannot be easily replaced or replenished within a short period of time.
Furthermore, minerals are depleting rapidly due to the increasing global demand and inefficient extraction and consumption practices. Many mineral reserves are being depleted faster than they can be replenished, leading to potential shortages and increased prices in the future.
Conserving minerals is therefore essential to ensure their sustainable use and availability for future generations. Conservation practices can include efficient extraction techniques, recycling and reusing minerals, and promoting responsible consumption. By conserving minerals, we can minimize the environmental impact of mining activities, reduce our dependency on imports, and ensure the long-term availability of these valuable resources.
Minerals are essential for various industrial processes, manufacturing, construction, and energy production. They are used to make products that are essential for our daily lives, such as vehicles, electronics, and infrastructure. Without minerals, the country's economy and development would be severely affected.
Additionally, minerals are not easily renewable resources. They are formed over millions of years through geological processes, making their replenishment extremely slow compared to their rate of consumption. Once minerals are extracted and used, they cannot be easily replaced or replenished within a short period of time.
Furthermore, minerals are depleting rapidly due to the increasing global demand and inefficient extraction and consumption practices. Many mineral reserves are being depleted faster than they can be replenished, leading to potential shortages and increased prices in the future.
Conserving minerals is therefore essential to ensure their sustainable use and availability for future generations. Conservation practices can include efficient extraction techniques, recycling and reusing minerals, and promoting responsible consumption. By conserving minerals, we can minimize the environmental impact of mining activities, reduce our dependency on imports, and ensure the long-term availability of these valuable resources.
Minerals are deposited and accumulated in strata of which of the following rocks?- a)Sedimentary rocks
- b)Metamorphic rocks
- c)Igneous rocks
- d)None of the above
Correct answer is option 'A'. Can you explain this answer?
Minerals are deposited and accumulated in strata of which of the following rocks?
a)
Sedimentary rocks
b)
Metamorphic rocks
c)
Igneous rocks
d)
None of the above
|
|
Akshara Basak answered |
A is the correct option.Minerals are found in layers or strata in sedimentary rocks. Minerals are accumulated in horizontal strata after being exposed to high heat and pressure for a long period of time. Coal, iron ore, gypsum, potash salt etc are formed in this way.
Which of the following minerals are obtained from veins and lodes?
(i) Zinc
(ii) Copper
(iii) Coal
(iv) Bauxite- a)Only (i) and (ii)
- b)Only (ii) and (iii)
- c)Only (iii) and (iv)
- d)All of the above
Correct answer is option 'A'. Can you explain this answer?
Which of the following minerals are obtained from veins and lodes?
(i) Zinc
(ii) Copper
(iii) Coal
(iv) Bauxite
(i) Zinc
(ii) Copper
(iii) Coal
(iv) Bauxite
a)
Only (i) and (ii)
b)
Only (ii) and (iii)
c)
Only (iii) and (iv)
d)
All of the above
|
|
Indu Gupta answered |
The minerals obtained from veins and lodes are typically metallic minerals that are found in concentrated deposits. Let's analyze each option to determine which minerals are obtained from veins and lodes:
(i) Zinc:
- Zinc is commonly obtained from veins and lodes.
- It is primarily found in association with other metallic minerals and is extracted from underground mines.
(ii) Copper:
- Copper is another mineral that is obtained from veins and lodes.
- It is often found in combination with other minerals in deposits and is extracted through mining operations.
(iii) Coal:
- Coal is not obtained from veins and lodes.
- It is formed from the remains of plants and is found in sedimentary rock layers, not in concentrated deposits like veins and lodes.
(iv) Bauxite:
- Bauxite is also not obtained from veins and lodes.
- It is the primary ore of aluminum and is typically found in tropical or subtropical regions, mainly in shallow layers of the Earth's crust.
Based on the analysis, the minerals obtained from veins and lodes are:
- Zinc
- Copper
Therefore, the correct answer is A: Only (i) and (ii).
Read the extract and answer the questions that follows:Minerals are usually found in “ores”. The term ore is used to describe an accumulation of any mineral mixed with other elements. The mineral content of the ore must be in sufficient concentration to make its extraction commercially viable. The type of formation or structure in which they are found determines the relative ease with which mineral ores may be mined. This also determines the cost of extraction. It is, therefore, important for us to understand the main types of formations in which minerals occur.Minerals generally occur in these forms:(i) In igneous and metamorphic rocks minerals may occur in the cracks, crevices, faults or joints. The smaller occurrences are called veins and the larger are called lodes. In most cases, they are formed when minerals in liquid/molten and gaseous forms are forced upward through cavities towards the earth’s surface. They cool and solidify as they rise. Major metallic minerals like tin, copper, zinc and lead etc. are obtained from veins and lodes.(ii) In sedimentary rocks a number of minerals occur in beds or layers. They have been formed as a result of deposition, accumulation and concentration in horizontal strata. Coal and some forms of iron ore have been concentrated as a result of long periods under great heat and pressure. Another group of sedimentary minerals include gypsum, potash salt and sodium salt. These are formed as a result of evaporation especially in arid regions.(iii) Another mode of formation involves the decomposition of surface rocks and the removal of soluble constituents, leaving a residual mass of weathered material containing ores. Bauxite is formed this way.(iv) Certain minerals may occur as alluvial deposits in sands of valley floors and the base of hills. These deposits are called ‘placer deposits’ and generally contain minerals, which are not corroded by water. Gold, silver, tin and platinum are most important among such minerals.(v) The ocean waters contain vast quantities of minerals, but most of these are too widely diffused to be of economic significance. However, common salt, magnesium and bromine are largely derived from ocean waters. The ocean beds, too, are rich in manganese nodules.Answer the following MCQs by choosing the most appropriate option.Q. The ocean beds, too, are rich in ______________ nodules.- a)Aluminium
- b)Iron
- c)manganese
- d)Zinc
Correct answer is option 'C'. Can you explain this answer?
Read the extract and answer the questions that follows:
Minerals are usually found in “ores”. The term ore is used to describe an accumulation of any mineral mixed with other elements. The mineral content of the ore must be in sufficient concentration to make its extraction commercially viable. The type of formation or structure in which they are found determines the relative ease with which mineral ores may be mined. This also determines the cost of extraction. It is, therefore, important for us to understand the main types of formations in which minerals occur.
Minerals generally occur in these forms:
(i) In igneous and metamorphic rocks minerals may occur in the cracks, crevices, faults or joints. The smaller occurrences are called veins and the larger are called lodes. In most cases, they are formed when minerals in liquid/molten and gaseous forms are forced upward through cavities towards the earth’s surface. They cool and solidify as they rise. Major metallic minerals like tin, copper, zinc and lead etc. are obtained from veins and lodes.
(ii) In sedimentary rocks a number of minerals occur in beds or layers. They have been formed as a result of deposition, accumulation and concentration in horizontal strata. Coal and some forms of iron ore have been concentrated as a result of long periods under great heat and pressure. Another group of sedimentary minerals include gypsum, potash salt and sodium salt. These are formed as a result of evaporation especially in arid regions.
(iii) Another mode of formation involves the decomposition of surface rocks and the removal of soluble constituents, leaving a residual mass of weathered material containing ores. Bauxite is formed this way.
(iv) Certain minerals may occur as alluvial deposits in sands of valley floors and the base of hills. These deposits are called ‘placer deposits’ and generally contain minerals, which are not corroded by water. Gold, silver, tin and platinum are most important among such minerals.
(v) The ocean waters contain vast quantities of minerals, but most of these are too widely diffused to be of economic significance. However, common salt, magnesium and bromine are largely derived from ocean waters. The ocean beds, too, are rich in manganese nodules.
Answer the following MCQs by choosing the most appropriate option.
Q. The ocean beds, too, are rich in ______________ nodules.
a)
Aluminium
b)
Iron
c)
manganese
d)
Zinc
|
Girisha menon answered |
Understanding Manganese Nodules
The question relates to the mineral wealth found in ocean beds, specifically focusing on manganese nodules. Here’s a detailed explanation of why the correct answer is option 'C' - manganese.
What are Manganese Nodules?
- Manganese nodules are rock concretions that are typically found on the ocean floor.
- They are composed mainly of manganese and iron, along with small amounts of nickel, copper, and cobalt.
- These nodules form over millions of years through the precipitation of minerals from seawater.
Significance of Manganese Nodules
- Manganese nodules are considered valuable due to their high mineral content, especially manganese, which is essential for steel production and other industrial applications.
- They are found in deep-sea environments, often at depths ranging from 4,000 to 6,000 meters.
Comparison with Other Minerals
- While ocean waters contain various minerals, most are too diffuse to be economically viable.
- Common salt, magnesium, and bromine are derived from ocean water but not in the concentrated form found in nodules.
- In contrast, manganese nodules present a concentrated source of manganese and other metals, making them of significant economic interest.
Conclusion
- The ocean beds are indeed rich in manganese nodules, which is why option 'C' is the correct answer.
- Understanding the formation and significance of these nodules highlights their role in both ecology and industry, emphasizing their importance in marine mineral resources.
The question relates to the mineral wealth found in ocean beds, specifically focusing on manganese nodules. Here’s a detailed explanation of why the correct answer is option 'C' - manganese.
What are Manganese Nodules?
- Manganese nodules are rock concretions that are typically found on the ocean floor.
- They are composed mainly of manganese and iron, along with small amounts of nickel, copper, and cobalt.
- These nodules form over millions of years through the precipitation of minerals from seawater.
Significance of Manganese Nodules
- Manganese nodules are considered valuable due to their high mineral content, especially manganese, which is essential for steel production and other industrial applications.
- They are found in deep-sea environments, often at depths ranging from 4,000 to 6,000 meters.
Comparison with Other Minerals
- While ocean waters contain various minerals, most are too diffuse to be economically viable.
- Common salt, magnesium, and bromine are derived from ocean water but not in the concentrated form found in nodules.
- In contrast, manganese nodules present a concentrated source of manganese and other metals, making them of significant economic interest.
Conclusion
- The ocean beds are indeed rich in manganese nodules, which is why option 'C' is the correct answer.
- Understanding the formation and significance of these nodules highlights their role in both ecology and industry, emphasizing their importance in marine mineral resources.
Nagarcoil and Jaisalmer are well-known for the effective use of ?- a)tidal energy
- b)geothermal energy
- c)wind energy
- d)biogas
Correct answer is option 'C'. Can you explain this answer?
Nagarcoil and Jaisalmer are well-known for the effective use of ?
a)
tidal energy
b)
geothermal energy
c)
wind energy
d)
biogas
|
|
Raghavendra Iyer answered |
C is the correct option. Nagercoil and Jaisalmer are well known for effective use of wind energy in the country.
Read the sources given below and answer the questions that follows:The major iron ore belts in India are:• Odisha-Jharkhand belt : In Odisha high grade hematite ore is found in Badampahar mines in the Mayurbhanj and Keonjhar districts. In the adjoining Singhbhum district of Jharkhand haematite iron ore is mined in Gua and Noamundi.• Durg-Bastar-Chandrapur belt lies in Chhattisgarh and Maharashtra. Very high grade hematites are found in the famous Bailadila range of hills in the Bastar district of Chhattisgarh. The range of hills comprises 14 deposits of super high grade hematite iron ore. It has the best physical properties needed for steel making. Iron ore from these mines is exported to Japan and South Korea via Visakhapatnam port.• Bellary-Chitradurga-Chikmagalur-Tumkur belt in Karnataka has large reserves of iron ore. The Kudremukh mines located in the Western Ghats of Karnataka are a 100 per cent export unit. Kudremukh deposits are known to be one of the largest in the world. The ore is transported as slurry through a pipeline to a port near Mangalore.• Maharashtra-Goa belt includes the state of Goa and Ratnagiri district of Maharashtra. Though, the ores are not of very high quality, yet they are efficiently exploited. Iron ore is exported through Mormugao port.Answer the following MCQs by choosing the most appropriate option.Q. Bellary-Chitradurga-Chikmagalur-Tumkur belt is a:- a)Iron-ore belt
- b)Mica belt
- c)Bauxite belt
- d)Mineral belt
Correct answer is option 'A'. Can you explain this answer?
Read the sources given below and answer the questions that follows:
The major iron ore belts in India are:
• Odisha-Jharkhand belt : In Odisha high grade hematite ore is found in Badampahar mines in the Mayurbhanj and Keonjhar districts. In the adjoining Singhbhum district of Jharkhand haematite iron ore is mined in Gua and Noamundi.
• Durg-Bastar-Chandrapur belt lies in Chhattisgarh and Maharashtra. Very high grade hematites are found in the famous Bailadila range of hills in the Bastar district of Chhattisgarh. The range of hills comprises 14 deposits of super high grade hematite iron ore. It has the best physical properties needed for steel making. Iron ore from these mines is exported to Japan and South Korea via Visakhapatnam port.
• Bellary-Chitradurga-Chikmagalur-Tumkur belt in Karnataka has large reserves of iron ore. The Kudremukh mines located in the Western Ghats of Karnataka are a 100 per cent export unit. Kudremukh deposits are known to be one of the largest in the world. The ore is transported as slurry through a pipeline to a port near Mangalore.
• Maharashtra-Goa belt includes the state of Goa and Ratnagiri district of Maharashtra. Though, the ores are not of very high quality, yet they are efficiently exploited. Iron ore is exported through Mormugao port.
Answer the following MCQs by choosing the most appropriate option.
Q. Bellary-Chitradurga-Chikmagalur-Tumkur belt is a:
a)
Iron-ore belt
b)
Mica belt
c)
Bauxite belt
d)
Mineral belt
|
|
Madhavi menon answered |
Iron-Ore Belt: Bellary-Chitradurga-Chikmagalur-Tumkur belt
The Bellary-Chitradurga-Chikmagalur-Tumkur belt in Karnataka is a significant iron ore belt in India. This belt has large reserves of iron ore and plays a crucial role in the country's iron and steel industry. Let's delve into the details of this iron-ore belt:
Location:
- The Bellary-Chitradurga-Chikmagalur-Tumkur belt is located in the state of Karnataka.
Reserves:
- This belt has substantial reserves of iron ore, making it an important mining area in the country.
Kudremukh Mines:
- The Kudremukh mines, situated in the Western Ghats of Karnataka, are a part of this iron-ore belt.
- These mines are known to be one of the largest in the world and operate as a 100 per cent export unit.
Transportation:
- Iron ore from the Kudremukh mines is transported as slurry through a pipeline to a port near Mangalore for export.
Export:
- The iron ore extracted from this belt is primarily exported to various countries, contributing to India's economy.
In conclusion, the Bellary-Chitradurga-Chikmagalur-Tumkur belt in Karnataka is a crucial iron-ore belt with significant reserves, including the renowned Kudremukh mines, which are vital for the iron and steel industry in India.
The Bellary-Chitradurga-Chikmagalur-Tumkur belt in Karnataka is a significant iron ore belt in India. This belt has large reserves of iron ore and plays a crucial role in the country's iron and steel industry. Let's delve into the details of this iron-ore belt:
Location:
- The Bellary-Chitradurga-Chikmagalur-Tumkur belt is located in the state of Karnataka.
Reserves:
- This belt has substantial reserves of iron ore, making it an important mining area in the country.
Kudremukh Mines:
- The Kudremukh mines, situated in the Western Ghats of Karnataka, are a part of this iron-ore belt.
- These mines are known to be one of the largest in the world and operate as a 100 per cent export unit.
Transportation:
- Iron ore from the Kudremukh mines is transported as slurry through a pipeline to a port near Mangalore for export.
Export:
- The iron ore extracted from this belt is primarily exported to various countries, contributing to India's economy.
In conclusion, the Bellary-Chitradurga-Chikmagalur-Tumkur belt in Karnataka is a crucial iron-ore belt with significant reserves, including the renowned Kudremukh mines, which are vital for the iron and steel industry in India.
Which of the following metals is a major constituent of non-ferrous minerals?- a)Iron
- b)Gold
- c)Manganese
- d)Chromium
Correct answer is option 'B'. Can you explain this answer?
a)
Iron
b)
Gold
c)
Manganese
d)
Chromium
|
Kds Coaching answered |
Gold is a major non-ferrous metal, which means it does not contain iron. Non-ferrous metals are used in various applications where the properties of iron are not desired, such as in jewelry and electronics.
Read the extract and answer the questions that follows:Minerals are usually found in “ores”. The term ore is used to describe an accumulation of any mineral mixed with other elements. The mineral content of the ore must be in sufficient concentration to make its extraction commercially viable. The type of formation or structure in which they are found determines the relative ease with which mineral ores may be mined. This also determines the cost of extraction. It is, therefore, important for us to understand the main types of formations in which minerals occur.Minerals generally occur in these forms:(i) In igneous and metamorphic rocks minerals may occur in the cracks, crevices, faults or joints. The smaller occurrences are called veins and the larger are called lodes. In most cases, they are formed when minerals in liquid/molten and gaseous forms are forced upward through cavities towards the earth’s surface. They cool and solidify as they rise. Major metallic minerals like tin, copper, zinc and lead etc. are obtained from veins and lodes.(ii) In sedimentary rocks a number of minerals occur in beds or layers. They have been formed as a result of deposition, accumulation and concentration in horizontal strata. Coal and some forms of iron ore have been concentrated as a result of long periods under great heat and pressure. Another group of sedimentary minerals include gypsum, potash salt and sodium salt. These are formed as a result of evaporation especially in arid regions.(iii) Another mode of formation involves the decomposition of surface rocks and the removal of soluble constituents, leaving a residual mass of weathered material containing ores. Bauxite is formed this way.(iv) Certain minerals may occur as alluvial deposits in sands of valley floors and the base of hills. These deposits are called ‘placer deposits’ and generally contain minerals, which are not corroded by water. Gold, silver, tin and platinum are most important among such minerals.(v) The ocean waters contain vast quantities of minerals, but most of these are too widely diffused to be of economic significance. However, common salt, magnesium and bromine are largely derived from ocean waters. The ocean beds, too, are rich in manganese nodules.Answer the following MCQs by choosing the most appropriate option.Q. The placer deposits generally contain minerals, which are not corroded by:- a)water
- b)coral
- c)oil
- d)ore
Correct answer is option 'A'. Can you explain this answer?
Read the extract and answer the questions that follows:
Minerals are usually found in “ores”. The term ore is used to describe an accumulation of any mineral mixed with other elements. The mineral content of the ore must be in sufficient concentration to make its extraction commercially viable. The type of formation or structure in which they are found determines the relative ease with which mineral ores may be mined. This also determines the cost of extraction. It is, therefore, important for us to understand the main types of formations in which minerals occur.
Minerals generally occur in these forms:
(i) In igneous and metamorphic rocks minerals may occur in the cracks, crevices, faults or joints. The smaller occurrences are called veins and the larger are called lodes. In most cases, they are formed when minerals in liquid/molten and gaseous forms are forced upward through cavities towards the earth’s surface. They cool and solidify as they rise. Major metallic minerals like tin, copper, zinc and lead etc. are obtained from veins and lodes.
(ii) In sedimentary rocks a number of minerals occur in beds or layers. They have been formed as a result of deposition, accumulation and concentration in horizontal strata. Coal and some forms of iron ore have been concentrated as a result of long periods under great heat and pressure. Another group of sedimentary minerals include gypsum, potash salt and sodium salt. These are formed as a result of evaporation especially in arid regions.
(iii) Another mode of formation involves the decomposition of surface rocks and the removal of soluble constituents, leaving a residual mass of weathered material containing ores. Bauxite is formed this way.
(iv) Certain minerals may occur as alluvial deposits in sands of valley floors and the base of hills. These deposits are called ‘placer deposits’ and generally contain minerals, which are not corroded by water. Gold, silver, tin and platinum are most important among such minerals.
(v) The ocean waters contain vast quantities of minerals, but most of these are too widely diffused to be of economic significance. However, common salt, magnesium and bromine are largely derived from ocean waters. The ocean beds, too, are rich in manganese nodules.
Answer the following MCQs by choosing the most appropriate option.
Q. The placer deposits generally contain minerals, which are not corroded by:
a)
water
b)
coral
c)
oil
d)
ore
|
|
Lalit Yadav answered |
Certain minerals may occur as alluvial deposits in sands of valley floors and the base of hills. These deposits are called 'placer deposits' and generally contain minerals, which are not corroded by water. Gold, silver, tin and platinum are the most important among such minerals.
Which one of the following mineral ores is formed by decomposition of rocks, leaving a residual mass of weathered material?- a)Coal
- b)Bauxite
- c)Gold
- d)Zinc
Correct answer is option 'B'. Can you explain this answer?
Which one of the following mineral ores is formed by decomposition of rocks, leaving a residual mass of weathered material?
a)
Coal
b)
Bauxite
c)
Gold
d)
Zinc
|
Sanaya Ahuja answered |
B is the correct option.Bauxite is a mineral which is formed by decomposition of rocks, leaving a residual mass of weathered material.
Read the extract and answer the questions that follows:Minerals are usually found in “ores”. The term ore is used to describe an accumulation of any mineral mixed with other elements. The mineral content of the ore must be in sufficient concentration to make its extraction commercially viable. The type of formation or structure in which they are found determines the relative ease with which mineral ores may be mined. This also determines the cost of extraction. It is, therefore, important for us to understand the main types of formations in which minerals occur.Minerals generally occur in these forms:(i) In igneous and metamorphic rocks minerals may occur in the cracks, crevices, faults or joints. The smaller occurrences are called veins and the larger are called lodes. In most cases, they are formed when minerals in liquid/molten and gaseous forms are forced upward through cavities towards the earth’s surface. They cool and solidify as they rise. Major metallic minerals like tin, copper, zinc and lead etc. are obtained from veins and lodes.(ii) In sedimentary rocks a number of minerals occur in beds or layers. They have been formed as a result of deposition, accumulation and concentration in horizontal strata. Coal and some forms of iron ore have been concentrated as a result of long periods under great heat and pressure. Another group of sedimentary minerals include gypsum, potash salt and sodium salt. These are formed as a result of evaporation especially in arid regions.(iii) Another mode of formation involves the decomposition of surface rocks and the removal of soluble constituents, leaving a residual mass of weathered material containing ores. Bauxite is formed this way.(iv) Certain minerals may occur as alluvial deposits in sands of valley floors and the base of hills. These deposits are called ‘placer deposits’ and generally contain minerals, which are not corroded by water. Gold, silver, tin and platinum are most important among such minerals.(v) The ocean waters contain vast quantities of minerals, but most of these are too widely diffused to be of economic significance. However, common salt, magnesium and bromine are largely derived from ocean waters. The ocean beds, too, are rich in manganese nodules.Answer the following MCQs by choosing the most appropriate option.Q. The term _________ is used to describe an accumulation of any mineral mixed with other elements.- a)ore
- b)deposits
- c)debris
- d)None of the above
Correct answer is option 'A'. Can you explain this answer?
Read the extract and answer the questions that follows:
Minerals are usually found in “ores”. The term ore is used to describe an accumulation of any mineral mixed with other elements. The mineral content of the ore must be in sufficient concentration to make its extraction commercially viable. The type of formation or structure in which they are found determines the relative ease with which mineral ores may be mined. This also determines the cost of extraction. It is, therefore, important for us to understand the main types of formations in which minerals occur.
Minerals generally occur in these forms:
(i) In igneous and metamorphic rocks minerals may occur in the cracks, crevices, faults or joints. The smaller occurrences are called veins and the larger are called lodes. In most cases, they are formed when minerals in liquid/molten and gaseous forms are forced upward through cavities towards the earth’s surface. They cool and solidify as they rise. Major metallic minerals like tin, copper, zinc and lead etc. are obtained from veins and lodes.
(ii) In sedimentary rocks a number of minerals occur in beds or layers. They have been formed as a result of deposition, accumulation and concentration in horizontal strata. Coal and some forms of iron ore have been concentrated as a result of long periods under great heat and pressure. Another group of sedimentary minerals include gypsum, potash salt and sodium salt. These are formed as a result of evaporation especially in arid regions.
(iii) Another mode of formation involves the decomposition of surface rocks and the removal of soluble constituents, leaving a residual mass of weathered material containing ores. Bauxite is formed this way.
(iv) Certain minerals may occur as alluvial deposits in sands of valley floors and the base of hills. These deposits are called ‘placer deposits’ and generally contain minerals, which are not corroded by water. Gold, silver, tin and platinum are most important among such minerals.
(v) The ocean waters contain vast quantities of minerals, but most of these are too widely diffused to be of economic significance. However, common salt, magnesium and bromine are largely derived from ocean waters. The ocean beds, too, are rich in manganese nodules.
Answer the following MCQs by choosing the most appropriate option.
Q. The term _________ is used to describe an accumulation of any mineral mixed with other elements.
a)
ore
b)
deposits
c)
debris
d)
None of the above
|
|
Shama malhotra answered |
Understanding the Term "Ore"
The term "ore" plays a crucial role in the field of geology and mining, as it refers to a specific type of mineral accumulation. Here’s why option 'A' is the correct answer:
Definition of Ore
- Ore is defined as an accumulation of any mineral that is mixed with other elements.
- It signifies a concentration of minerals that can be economically extracted.
Commercial Viability
- The mineral content in an ore must be present in sufficient concentration to make the extraction process commercially viable.
- This means that without such concentration, the extraction would not be profitable, leading to the term “ore” being used specifically for economically viable deposits.
Relation to Other Terms
- Deposits (option b) generally refer to any accumulation of materials but do not specifically imply economic viability.
- Debris (option c) refers to loose material or waste, which is not applicable in this context.
- Hence, "ore" is the most accurate term to describe mineral accumulations that are economically significant.
Conclusion
- Understanding the definition and significance of "ore" is essential in mining and resource management.
- This clarity helps in identifying which mineral formations can be extracted profitably, making "ore" the appropriate choice.
The term "ore" plays a crucial role in the field of geology and mining, as it refers to a specific type of mineral accumulation. Here’s why option 'A' is the correct answer:
Definition of Ore
- Ore is defined as an accumulation of any mineral that is mixed with other elements.
- It signifies a concentration of minerals that can be economically extracted.
Commercial Viability
- The mineral content in an ore must be present in sufficient concentration to make the extraction process commercially viable.
- This means that without such concentration, the extraction would not be profitable, leading to the term “ore” being used specifically for economically viable deposits.
Relation to Other Terms
- Deposits (option b) generally refer to any accumulation of materials but do not specifically imply economic viability.
- Debris (option c) refers to loose material or waste, which is not applicable in this context.
- Hence, "ore" is the most accurate term to describe mineral accumulations that are economically significant.
Conclusion
- Understanding the definition and significance of "ore" is essential in mining and resource management.
- This clarity helps in identifying which mineral formations can be extracted profitably, making "ore" the appropriate choice.
Which of the following is a major metallic mineral obtained from veins and lodes?- a)Tin
- b)Iron
- c)Manganese
- d)Gold
Correct answer is option 'A'. Can you explain this answer?
Which of the following is a major metallic mineral obtained from veins and lodes?
a)
Tin
b)
Iron
c)
Manganese
d)
Gold
|
|
Aarya Pillai answered |
A is the correct option.Major metallic minerals like tin, copper, zinc and lead etc. are obtained from veins and lodes. sodium salt. These are formed as a result of evaporation especially in arid regions.
Which of the following regions of India contain most of the reserves of coal, metallic minerals, mica and many other non-metallic minerals?- a)The Himalayas
- b)Alluvial plains of North India
- c)Rock system of peninsula in Rajasthan
- d)Peninsular plateau region
Correct answer is option 'D'. Can you explain this answer?
Which of the following regions of India contain most of the reserves of coal, metallic minerals, mica and many other non-metallic minerals?
a)
The Himalayas
b)
Alluvial plains of North India
c)
Rock system of peninsula in Rajasthan
d)
Peninsular plateau region
|
|
Maya Pillai answered |
D is the correct option.peninsular rocks contain most of the reserves of coal, metallic minerals, mica and many other non-metallic minerals. Sedimentary rocks on the western and eastern flanks of the peninsula, in Gujarat and Assam have most of the petroleum deposits.
Due to which of the following reasons is the Bailadila range in the Bastar district of Chhattisgarh famous?- a)It is the highest range in Central India
- b)Very high grade haematite variety of iron ore is found here
- c)Very high grade coal deposits are found here
- d)It is the largest iron ore deposit in the world
Correct answer is option 'B'. Can you explain this answer?
Due to which of the following reasons is the Bailadila range in the Bastar district of Chhattisgarh famous?
a)
It is the highest range in Central India
b)
Very high grade haematite variety of iron ore is found here
c)
Very high grade coal deposits are found here
d)
It is the largest iron ore deposit in the world
|
|
Debolina Chakraborty answered |
B is the correct option.Bailadila is famous for producing iron which is used for steel making. 'BAILADILA' is a hill range in Chattisgarh which is famous for “the very high grade hematites” which are found in bailadila.
Which state in India is the largest producer of bauxite? - a)Odisha
- b)Karnataka
- c)Maharashtra
- d)Kerala
Correct answer is option 'A'. Can you explain this answer?
Which state in India is the largest producer of bauxite?
a)
Odisha
b)
Karnataka
c)
Maharashtra
d)
Kerala
|
|
Harshita Jain answered |
Odisha is the largest bauxite producing state accounting for more than half of the total production of India.The main bauxite belt is in kalahandi and Koraput districts.
In igneous and metamorphic rocks, minerals may occur in the ..........
(i) Cracks
(ii) Crevices
(iii) Faults or joints
(iv) Beds- a)Only (i) and (ii)
- b)Only (i), (ii) and (iii)
- c)Only (iii) and (iv)
- d)All of the above
Correct answer is option 'B'. Can you explain this answer?
In igneous and metamorphic rocks, minerals may occur in the ..........
(i) Cracks
(ii) Crevices
(iii) Faults or joints
(iv) Beds
(i) Cracks
(ii) Crevices
(iii) Faults or joints
(iv) Beds
a)
Only (i) and (ii)
b)
Only (i), (ii) and (iii)
c)
Only (iii) and (iv)
d)
All of the above
|
Rohini Seth answered |
In igneous and metamorphic rocks, minerals may occur in various locations within the rock formation. The minerals can be found in:
Cracks:
- Cracks or fissures within the rock provide spaces for minerals to accumulate.
- These cracks can be formed due to cooling and contraction of the rock or due to tectonic forces.
Crevices:
- Crevices are narrow openings or gaps within the rock.
- These gaps can be formed by weathering and erosion processes or by the movement of rock layers.
Faults or joints:
- Faults and joints are fractures in the rock where there has been displacement.
- These fractures can create pathways for mineral-rich fluids to flow and deposit minerals.
Beds:
- Beds refer to layers or strata of rock.
- Minerals can be present within these layers, either as primary minerals that formed during the rock's formation or as secondary minerals that have been deposited later.
Based on the given options, minerals can occur in cracks and crevices (i and ii) as well as in faults or joints (iii). Therefore, the correct answer is option B: Only (i), (ii), and (iii).
Read the sources given below and answer the questions that follows:Read the sources given below and answer the questions that follows:The major iron ore belts in India are:• Odisha-Jharkhand belt : In Odisha high grade hematite ore is found in Badampahar mines in the Mayurbhanj and Keonjhar districts. In the adjoining Singhbhum district of Jharkhand haematite iron ore is mined in Gua and Noamundi.• Durg-Bastar-Chandrapur belt lies in Chhattisgarh and Maharashtra. Very high grade hematites are found in the famous Bailadila range of hills in the Bastar district of Chhattisgarh. The range of hills comprises 14 deposits of super high grade hematite iron ore. It has the best physical properties needed for steel making. Iron ore from these mines is exported to Japan and South Korea via Visakhapatnam port.• Bellary-Chitradurga-Chikmagalur-Tumkur belt in Karnataka has large reserves of iron ore. The Kudremukh mines located in the Western Ghats of Karnataka are a 100 per cent export unit. Kudremukh deposits are known to be one of the largest in the world. The ore is transported as slurry through a pipeline to a port near Mangalore.• Maharashtra-Goa belt includes the state of Goa and Ratnagiri district of Maharashtra. Though, the ores are not of very high quality, yet they are efficiently exploited. Iron ore is exported through Mormugao port.Answer the following MCQs by choosing the most appropriate option.Q. The ore is transported as slurry through a ________ to a port near Mangalore.- a)lorry
- b)train
- c)ferry
- d)pipeline
Correct answer is option 'D'. Can you explain this answer?
Read the sources given below and answer the questions that follows:
Read the sources given below and answer the questions that follows:
The major iron ore belts in India are:
• Odisha-Jharkhand belt : In Odisha high grade hematite ore is found in Badampahar mines in the Mayurbhanj and Keonjhar districts. In the adjoining Singhbhum district of Jharkhand haematite iron ore is mined in Gua and Noamundi.
• Durg-Bastar-Chandrapur belt lies in Chhattisgarh and Maharashtra. Very high grade hematites are found in the famous Bailadila range of hills in the Bastar district of Chhattisgarh. The range of hills comprises 14 deposits of super high grade hematite iron ore. It has the best physical properties needed for steel making. Iron ore from these mines is exported to Japan and South Korea via Visakhapatnam port.
• Bellary-Chitradurga-Chikmagalur-Tumkur belt in Karnataka has large reserves of iron ore. The Kudremukh mines located in the Western Ghats of Karnataka are a 100 per cent export unit. Kudremukh deposits are known to be one of the largest in the world. The ore is transported as slurry through a pipeline to a port near Mangalore.
• Maharashtra-Goa belt includes the state of Goa and Ratnagiri district of Maharashtra. Though, the ores are not of very high quality, yet they are efficiently exploited. Iron ore is exported through Mormugao port.
Answer the following MCQs by choosing the most appropriate option.
Q. The ore is transported as slurry through a ________ to a port near Mangalore.
a)
lorry
b)
train
c)
ferry
d)
pipeline
|
|
Anita Menon answered |
The developments in slurry transportation of solids and beneficiation of ores, this huge deposit became economically viable. Iron ore concentrate is transported in slurry form through pipeline for a distance of 67 km.
Minerals formed from solidification of molten matter in the crack, crevices, faults or joints are found in which types of rocks?- a)Stratified rocks
- b)Igneous and metamorphic rocks
- c)Sedimentary rocks
- d)None of the above
Correct answer is option 'B'. Can you explain this answer?
Minerals formed from solidification of molten matter in the crack, crevices, faults or joints are found in which types of rocks?
a)
Stratified rocks
b)
Igneous and metamorphic rocks
c)
Sedimentary rocks
d)
None of the above
|
|
Gauri Shah answered |
B is the correct option.In igneous and metamorphic rocks minerals may occur in the cracks, crevices, faults or joints. The smaller occurrences are called Veins and the larger is called Lodes. In most cases, they are formed when minerals in liquid/molten and gaseous forms are forced upward through cavities towards the earth's surface.
Read the sources given below and answer the questions that follows:Read the sources given below and answer the questions that follows:The major iron ore belts in India are:• Odisha-Jharkhand belt : In Odisha high grade hematite ore is found in Badampahar mines in the Mayurbhanj and Keonjhar districts. In the adjoining Singhbhum district of Jharkhand haematite iron ore is mined in Gua and Noamundi.• Durg-Bastar-Chandrapur belt lies in Chhattisgarh and Maharashtra. Very high grade hematites are found in the famous Bailadila range of hills in the Bastar district of Chhattisgarh. The range of hills comprises 14 deposits of super high grade hematite iron ore. It has the best physical properties needed for steel making. Iron ore from these mines is exported to Japan and South Korea via Visakhapatnam port.• Bellary-Chitradurga-Chikmagalur-Tumkur belt in Karnataka has large reserves of iron ore. The Kudremukh mines located in the Western Ghats of Karnataka are a 100 per cent export unit. Kudremukh deposits are known to be one of the largest in the world. The ore is transported as slurry through a pipeline to a port near Mangalore.• Maharashtra-Goa belt includes the state of Goa and Ratnagiri district of Maharashtra. Though, the ores are not of very high quality, yet they are efficiently exploited. Iron ore is exported through Mormugao port.Answer the following MCQs by choosing the most appropriate option.Q. High grade hematite iron are has the best physical properties needed for :- a)steel making
- b)Iron making
- c)wire making
- d)none of these
Correct answer is option 'A'. Can you explain this answer?
Read the sources given below and answer the questions that follows:
Read the sources given below and answer the questions that follows:
The major iron ore belts in India are:
• Odisha-Jharkhand belt : In Odisha high grade hematite ore is found in Badampahar mines in the Mayurbhanj and Keonjhar districts. In the adjoining Singhbhum district of Jharkhand haematite iron ore is mined in Gua and Noamundi.
• Durg-Bastar-Chandrapur belt lies in Chhattisgarh and Maharashtra. Very high grade hematites are found in the famous Bailadila range of hills in the Bastar district of Chhattisgarh. The range of hills comprises 14 deposits of super high grade hematite iron ore. It has the best physical properties needed for steel making. Iron ore from these mines is exported to Japan and South Korea via Visakhapatnam port.
• Bellary-Chitradurga-Chikmagalur-Tumkur belt in Karnataka has large reserves of iron ore. The Kudremukh mines located in the Western Ghats of Karnataka are a 100 per cent export unit. Kudremukh deposits are known to be one of the largest in the world. The ore is transported as slurry through a pipeline to a port near Mangalore.
• Maharashtra-Goa belt includes the state of Goa and Ratnagiri district of Maharashtra. Though, the ores are not of very high quality, yet they are efficiently exploited. Iron ore is exported through Mormugao port.
Answer the following MCQs by choosing the most appropriate option.
Q. High grade hematite iron are has the best physical properties needed for :
a)
steel making
b)
Iron making
c)
wire making
d)
none of these
|
|
Sonam nayar answered |
Understanding High-Grade Hematite Iron Ore
High-grade hematite iron ore is crucial in the production of steel, which is a fundamental material used in various industries. Here’s why it has the best physical properties needed for steel making:
1. Superior Purity
- High-grade hematite generally contains a higher percentage of iron (Fe), typically over 60%.
- This purity ensures that less energy is required during the smelting process, making it more efficient.
2. Optimal Physical Properties
- The physical characteristics of high-grade hematite, such as density and hardness, contribute to its effectiveness in steel production.
- These properties allow for better melting and refining processes, resulting in stronger steel.
3. Economic Benefits
- Using high-grade hematite reduces the volume of ore needed for steel production.
- This efficiency leads to lower transportation and processing costs, making it economically favorable.
4. Quality of Steel Produced
- Steel produced from high-grade hematite exhibits enhanced strength, ductility, and toughness.
- These qualities are vital for constructing durable structures and manufacturing high-performance products.
Conclusion
In conclusion, high-grade hematite iron ore is essential for steel making due to its superior purity, optimal physical properties, economic advantages, and the high quality of steel it produces. Thus, option 'A' is the correct choice for this question.
High-grade hematite iron ore is crucial in the production of steel, which is a fundamental material used in various industries. Here’s why it has the best physical properties needed for steel making:
1. Superior Purity
- High-grade hematite generally contains a higher percentage of iron (Fe), typically over 60%.
- This purity ensures that less energy is required during the smelting process, making it more efficient.
2. Optimal Physical Properties
- The physical characteristics of high-grade hematite, such as density and hardness, contribute to its effectiveness in steel production.
- These properties allow for better melting and refining processes, resulting in stronger steel.
3. Economic Benefits
- Using high-grade hematite reduces the volume of ore needed for steel production.
- This efficiency leads to lower transportation and processing costs, making it economically favorable.
4. Quality of Steel Produced
- Steel produced from high-grade hematite exhibits enhanced strength, ductility, and toughness.
- These qualities are vital for constructing durable structures and manufacturing high-performance products.
Conclusion
In conclusion, high-grade hematite iron ore is essential for steel making due to its superior purity, optimal physical properties, economic advantages, and the high quality of steel it produces. Thus, option 'A' is the correct choice for this question.
Read the extract and answer the questions that follows:In India, coal is the most abundantly available fossil fuel. It provides a substantial part of the nation’s energy needs. It is used for power generation, to supply energy to industry as well as for domestic needs. India is highly dependent on coal for meeting its commercial energy requirements. As you are already aware that coal is formed due the compression of plant material over millions of years. Coal, therefore, is found in a variety of forms depending on the degrees of compression and the depth and time of burial. Decaying plants in swamps produce peat which has a low carbon and high moisture contents and low heating capacity. Lignite is a low grade brown coal, which is soft with high moisture content. The principal lignite reserves are in Neyveli in Tamil Nadu and are used for generation of electricity. Coal that has been buried deep and subjected to increased temperatures is bituminous coal. It is the most popular coal in commercial use. Metallurgical coal is high grade bituminous coal which has a special value for smelting iron in blast furnaces. Anthracite is the highest quality hard coal. In India coal occurs in rock series of two main geological ages, namely Gondwana, a little over 200 million years in age and in tertiary deposits which are only about 55 million years old. The major resources of Gondwana coal, which are metallurgical coal, are located in Damodar valley (West Bengal-Jharkhand). Jharia, Raniganj, Bokaro are important coalfields. The Godavari, Mahanadi, Son and Wardha valleys also contain coal deposits. Tertiary coals occur in the north eastern states of Meghalaya, Assam, Arunachal Pradesh and Nagaland. Remember coal is a bulky material, which loses weight on use as it is reduced to ash. Hence, heavy industries and thermal power stations are located on or near the coalfields.Answer the following MCQs by choosing the most appropriate option.Q. Which type of coal occurs in the north eastern states of Meghalaya, Assam, Nagaland and Arunachal Pradesh?- a)Low quality
- b)Medium quality
- c)Tertiary
- d)secondary
Correct answer is option 'C'. Can you explain this answer?
Read the extract and answer the questions that follows:
In India, coal is the most abundantly available fossil fuel. It provides a substantial part of the nation’s energy needs. It is used for power generation, to supply energy to industry as well as for domestic needs. India is highly dependent on coal for meeting its commercial energy requirements. As you are already aware that coal is formed due the compression of plant material over millions of years. Coal, therefore, is found in a variety of forms depending on the degrees of compression and the depth and time of burial. Decaying plants in swamps produce peat which has a low carbon and high moisture contents and low heating capacity. Lignite is a low grade brown coal, which is soft with high moisture content. The principal lignite reserves are in Neyveli in Tamil Nadu and are used for generation of electricity. Coal that has been buried deep and subjected to increased temperatures is bituminous coal. It is the most popular coal in commercial use. Metallurgical coal is high grade bituminous coal which has a special value for smelting iron in blast furnaces. Anthracite is the highest quality hard coal. In India coal occurs in rock series of two main geological ages, namely Gondwana, a little over 200 million years in age and in tertiary deposits which are only about 55 million years old. The major resources of Gondwana coal, which are metallurgical coal, are located in Damodar valley (West Bengal-Jharkhand). Jharia, Raniganj, Bokaro are important coalfields. The Godavari, Mahanadi, Son and Wardha valleys also contain coal deposits. Tertiary coals occur in the north eastern states of Meghalaya, Assam, Arunachal Pradesh and Nagaland. Remember coal is a bulky material, which loses weight on use as it is reduced to ash. Hence, heavy industries and thermal power stations are located on or near the coalfields.
Answer the following MCQs by choosing the most appropriate option.
Q. Which type of coal occurs in the north eastern states of Meghalaya, Assam, Nagaland and Arunachal Pradesh?
a)
Low quality
b)
Medium quality
c)
Tertiary
d)
secondary
|
|
Amit Sharma answered |
Tertiary coal fields share only 1% of coal production of India. Such fields occur in Assam, Arunachal Pradesh, Meghalaya and Nagaland and also in small quantities in Jammu & Kashmir.
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