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All questions of Class 8 Geography for UPSC CSE Exam
Name the oldest occupation known to humans- a)Agriculture
- b)Trading
- c)Mining
- d)Hunting
Correct answer is option 'A'. Can you explain this answer?
Name the oldest occupation known to humans
a)
Agriculture
b)
Trading
c)
Mining
d)
Hunting
|
Mona Ghosh answered |
1 Agriculture bcz.A poor person can also do.
2 A non educational person also can do.
3 In a traditional manner they can do.
Complete the following : On the basis of their development and Use, resources can be classified as Actual and ________ Resources- a)Potential
- b)Abiotic
- c)Biotic
- d)Renewable
Correct answer is option 'A'. Can you explain this answer?
Complete the following : On the basis of their development and Use, resources can be classified as Actual and ________ Resources
a)
Potential
b)
Abiotic
c)
Biotic
d)
Renewable
|
Kavya Saxena answered |
Biotic and abiotic resources are classified on the basis of origin.renewable resources are on the basis of exhaustion., but on the basis of their use resources can be classified as actual. potential developed and stock.
Name the country with the largest reserve of iron ore.- a)Canada
- b)France
- c)Russia
- d)India
Correct answer is option 'C'. Can you explain this answer?
Name the country with the largest reserve of iron ore.
a)
Canada
b)
France
c)
Russia
d)
India
|
Poonam Reddy answered |
Obviously Russia , far East region of Russia has many minerals , natural gas etc .Recently India PM visited the far East region .China also visited the region and Russia also proposed a 4000km natural gas pipe line to eastern China recently.
From the given list of options, which one can be considered as an example of a Natural Resource?- a)Railway Tracks
- b)Bridges
- c)Sunlight
- d)Roads
Correct answer is option 'C'. Can you explain this answer?
From the given list of options, which one can be considered as an example of a Natural Resource?
a)
Railway Tracks
b)
Bridges
c)
Sunlight
d)
Roads
|
Akshita Bose answered |
Natural resources are materials or substances that occur in nature and are utilized by humans for various purposes. They are essentially derived from the environment and can be classified into renewable and nonrenewable resources. Examples of natural resources include air, water, soil, minerals, and sunlight.
Among the given options, option 'C' - Sunlight can be considered as an example of a natural resource. Let's delve into the reasons why sunlight fits the definition of a natural resource:
1. Importance in sustaining life: Sunlight is essential for various biological processes and is a fundamental requirement for the survival of all living organisms, including human beings. It plays a crucial role in photosynthesis, which is the process through which plants convert sunlight into energy to grow and produce oxygen.
2. Energy source: Sunlight is a significant source of renewable energy. Through technologies such as solar panels and solar cells, sunlight can be harnessed and converted into electricity to power homes, industries, and even vehicles. This renewable energy source helps reduce reliance on nonrenewable resources like fossil fuels.
3. Environmental benefits: Sunlight is a clean and sustainable energy source, unlike fossil fuels that release harmful pollutants when burned. By utilizing sunlight as an energy resource, we can reduce air pollution, greenhouse gas emissions, and mitigate the impacts of climate change.
4. Economic value: Sunlight has significant economic value as it can be utilized for various purposes. Besides generating electricity, sunlight is used in industries such as agriculture (for crop growth), manufacturing (solar-powered devices), and tourism (solar-powered attractions). It also supports the solar energy industry, creating job opportunities and contributing to economic growth.
5. Recreation and well-being: Sunlight plays a vital role in human well-being by providing vitamin D, improving mood, and supporting overall health. It also offers recreational opportunities, as people engage in outdoor activities and enjoy the warmth and beauty of the sun.
In conclusion, sunlight is an example of a natural resource due to its importance in sustaining life, its role as an energy source, its environmental benefits, economic value, and its positive impact on human well-being. Utilizing sunlight efficiently and harnessing its potential can contribute to a more sustainable and environmentally friendly future.
Among the given options, option 'C' - Sunlight can be considered as an example of a natural resource. Let's delve into the reasons why sunlight fits the definition of a natural resource:
1. Importance in sustaining life: Sunlight is essential for various biological processes and is a fundamental requirement for the survival of all living organisms, including human beings. It plays a crucial role in photosynthesis, which is the process through which plants convert sunlight into energy to grow and produce oxygen.
2. Energy source: Sunlight is a significant source of renewable energy. Through technologies such as solar panels and solar cells, sunlight can be harnessed and converted into electricity to power homes, industries, and even vehicles. This renewable energy source helps reduce reliance on nonrenewable resources like fossil fuels.
3. Environmental benefits: Sunlight is a clean and sustainable energy source, unlike fossil fuels that release harmful pollutants when burned. By utilizing sunlight as an energy resource, we can reduce air pollution, greenhouse gas emissions, and mitigate the impacts of climate change.
4. Economic value: Sunlight has significant economic value as it can be utilized for various purposes. Besides generating electricity, sunlight is used in industries such as agriculture (for crop growth), manufacturing (solar-powered devices), and tourism (solar-powered attractions). It also supports the solar energy industry, creating job opportunities and contributing to economic growth.
5. Recreation and well-being: Sunlight plays a vital role in human well-being by providing vitamin D, improving mood, and supporting overall health. It also offers recreational opportunities, as people engage in outdoor activities and enjoy the warmth and beauty of the sun.
In conclusion, sunlight is an example of a natural resource due to its importance in sustaining life, its role as an energy source, its environmental benefits, economic value, and its positive impact on human well-being. Utilizing sunlight efficiently and harnessing its potential can contribute to a more sustainable and environmentally friendly future.
Name the type of resources which have the capacity or ability to reproduce or renew quickly .- a)Localised Resources
- b)Non-Renewable Resources
- c)Renewable Resources
- d)Ubiquitous Resources
Correct answer is option 'C'. Can you explain this answer?
Name the type of resources which have the capacity or ability to reproduce or renew quickly .
a)
Localised Resources
b)
Non-Renewable Resources
c)
Renewable Resources
d)
Ubiquitous Resources
|
Amit Sharma answered |
Renewable energy never runs out, example: solar energy is powered by heat the sun and never runs out. Examples include oxygen, fresh water, solar energy and biomass. New resources may include goods or commodities such as paper and leather.
Some important examples of the classification of land based on the relief are given below, select the one that does not belong to this category.
- a)Plateau
- b)Rivers
- c)Mountains
- d)Plains
Correct answer is option 'B'. Can you explain this answer?
Some important examples of the classification of land based on the relief are given below, select the one that does not belong to this category.
a)
Plateau
b)
Rivers
c)
Mountains
d)
Plains
|
|
Ananya Das answered |
The classification of land based on relief typically includes geographical features such as plateaus, mountains, and plains. However, rivers are not considered a landform or feature of relief themselves. Rivers are water bodies that flow through various types of landforms, including plateaus, mountains, and plains. Therefore, rivers do not belong to the category of land classification based on relief.
On the basis of the development of that area, land can be classified as _________ and __________.Fertile and Barren LandRural and Urban LandPrivate and Government owned landPlateau and Plains- a)Fertile and Barren Land
- b)Rural and Urban Land
- c)Private and Government owned land
- d)Plateau and Plains
Correct answer is option 'B'. Can you explain this answer?
On the basis of the development of that area, land can be classified as _________ and __________.
Fertile and Barren Land
Rural and Urban Land
Private and Government owned land
Plateau and Plains
a)
Fertile and Barren Land
b)
Rural and Urban Land
c)
Private and Government owned land
d)
Plateau and Plains
|
|
Kavya Saxena answered |
A rural area is an open swath of land that has few homes or other buildings, and not very many people. A rural areas population density is very low. Many people live in a city, or urban area.Hamlets, villages, towns, and other small settlements are in or surrounded by rural areas.
Some examples of minerals are given below, pick out the one that is not a metallic mineral
- a)Bauxite
- b)Gold
- c)Iron Ore
- d)Limestone
Correct answer is option 'D'. Can you explain this answer?
Some examples of minerals are given below, pick out the one that is not a metallic mineral
a)
Bauxite
b)
Gold
c)
Iron Ore
d)
Limestone
|
Rajesh Khatri answered |
The metal ores itself can be considered as a mineral. Some common metal minerals include Iron, Copper, Gold, Silver, etc. Non-Metallic Minerals do not contain metal elements in their inorganic chemical formula. Some common examples include; Clay, Diamond, Dolomite, Gypsum, Mica, Amethyst and Quartz, etc.
On the basis of their distribution, Natural resources can be classified as____________ and ________.- a)Ubiquitous and Localised resources
- b)Biotic and Abiotic resources
- c)Actual and Potential resources
- d)Renewable and Non Renewable
Correct answer is option 'A'. Can you explain this answer?
On the basis of their distribution, Natural resources can be classified as____________ and ________.
a)
Ubiquitous and Localised resources
b)
Biotic and Abiotic resources
c)
Actual and Potential resources
d)
Renewable and Non Renewable
|
Malavika Basu answered |
Natural resources can be classified on the basis of their level of development and use, origin, stock and distribution.
Classification of natural resources on the basis of distribution:
Ubiquitous Resource: Resources which are available everywhere on the earth are called ubiquitous resources, e.g. air and water.
Localised Resource: Resources which are available at select locations on the earth are called localized resources, e.g. coal mines in Jharkhand. Topography, climate and altitude are the major factors which affect the distribution of natural resources.
Land covers only about ____ percent of the total area of the earth’s surface- a)20
- b)25
- c)30
- d)35
Correct answer is option 'C'. Can you explain this answer?
Land covers only about ____ percent of the total area of the earth’s surface
a)
20
b)
25
c)
30
d)
35
|
|
Rahul Choudhury answered |
Area of land: 148 326 000 km2 (57 268 900 square miles), this are 30% of the total surface of Planet Earth. Area of water: 361 740 000 km2 (139 668 500 square miles), this are 71% of the total surface of the Earth. 97 percent is salt water and only 3 percent is fresh water.
Fill in the blanks.
On the basis of the availability of supply, Natural resources can be classified as __________ and ________.
- a)Renewable and Non Renewable
- b)Biotic and Abiotic resources
- c)Ubiquitous and Localised resources
- d)Actual and Potential resources
Correct answer is option 'A'. Can you explain this answer?
Fill in the blanks.
On the basis of the availability of supply, Natural resources can be classified as __________ and ________.
On the basis of the availability of supply, Natural resources can be classified as __________ and ________.
a)
Renewable and Non Renewable
b)
Biotic and Abiotic resources
c)
Ubiquitous and Localised resources
d)
Actual and Potential resources
|
|
Aruna Singh answered |
1.Renewable resources -These can be renewed or reproduced by physical, chemical and mechanical processes. For example, water , forests, wildlife, etc.
2.Non-Renewable resources -These occur over a very long geological time and take millions of years in their formation. For example, minerals and fossil fuels
Nitrogen fixation can be done by - a)Industries
- b)Rhizobium
- c)Lightening
- d)All of the above
Correct answer is option 'D'. Can you explain this answer?
Nitrogen fixation can be done by
a)
Industries
b)
Rhizobium
c)
Lightening
d)
All of the above
|
Suresh Reddy answered |
A relatively small amount of ammonia is produced by lightning. Some ammonia also is produced industrially by the Haber-Bosch process, using an iron-based catalyst, very high pressures and fairly high temperature. But the major conversion of N2 into ammonia, and thence into proteins, is achieved by microorganisms in the process called nitrogen fixation (or dinitrogen fixation).
The organisms utilize the enzyme nitrogenase to catalyze the conversion of atmospheric nitrogen (N2) to ammonia (NH3). Plants can readily assimilate NH3 to produce the aforementioned nitrogenous biomolecules. These prokaryotes include aquatic organisms, such as cyanobacteria, free-living soil bacteria, such as Azotobacter, bacteria that form associative relationships with plants, such as Azospirillum, and most importantly, bacteria, such as Rhizobium.
The organisms utilize the enzyme nitrogenase to catalyze the conversion of atmospheric nitrogen (N2) to ammonia (NH3). Plants can readily assimilate NH3 to produce the aforementioned nitrogenous biomolecules. These prokaryotes include aquatic organisms, such as cyanobacteria, free-living soil bacteria, such as Azotobacter, bacteria that form associative relationships with plants, such as Azospirillum, and most importantly, bacteria, such as Rhizobium.
Name the country in Europe where the Ruhr Valley is situated. Rich in coal deposits, this region is today one of the most populated industrial regions.- a)Italy
- b)Finland
- c)Germany
- d)Norway
Correct answer is option 'C'. Can you explain this answer?
Name the country in Europe where the Ruhr Valley is situated. Rich in coal deposits, this region is today one of the most populated industrial regions.
a)
Italy
b)
Finland
c)
Germany
d)
Norway
|
Geetika Shah answered |
Germany, also referred to as Ruhr area, Ruhr district, Ruhr region, or Ruhr valley, is a polycentric urban area in North Rhine-Westphalia.
With limited capital, a food processing unit is set up in a particular village in Gujarat. This unit generates employment to that particular village. Name the type of classification of industry under which this food processing unit will come under.- a)Forest based industry
- b)Agro based industry
- c)Small Scale industry
- d)Large Scale industry
Correct answer is option 'C'. Can you explain this answer?
With limited capital, a food processing unit is set up in a particular village in Gujarat. This unit generates employment to that particular village. Name the type of classification of industry under which this food processing unit will come under.
a)
Forest based industry
b)
Agro based industry
c)
Small Scale industry
d)
Large Scale industry
|
Afruyash answered |
Small scale industry.
Name the term given to the commercial rearing of silk worms to supplement the income of the farmer.- a)Horticulture
- b)Viticulture
- c)Sericulture
- d)Pisciculture
Correct answer is option 'C'. Can you explain this answer?
Name the term given to the commercial rearing of silk worms to supplement the income of the farmer.
a)
Horticulture
b)
Viticulture
c)
Sericulture
d)
Pisciculture
|
|
Maitri Patel answered |
Sericulture
Sericulture is the term given to the commercial rearing of silk worms to supplement the income of the farmer. It is a lucrative business and is practiced mainly in the rural areas of India. The practice of sericulture involves the cultivation of mulberry trees, which provide the food for the silk worms.
Process of Sericulture
The process involves the following steps:
1. Mulberry cultivation: Farmers cultivate mulberry trees to provide food for the silk worms.
2. Egg production: Female silk moths lay eggs which are collected and kept in a cool place until they hatch.
3. Rearing of silk worms: The eggs hatch into silk worms, which are then reared in trays. The silk worms are fed with fresh mulberry leaves every day.
4. Cocoon formation: After about 25-30 days, the silk worms stop eating and start spinning cocoons around themselves.
5. Silk extraction: After about 10-12 days, the cocoons are ready to be harvested. The silk is extracted from the cocoons by boiling them in water.
6. Weaving: The silk is then spun into thread and woven into fabric.
Benefits of Sericulture
Sericulture has several benefits:
1. It provides a source of income for farmers.
2. It is an eco-friendly activity as it involves the cultivation of mulberry trees.
3. It provides employment opportunities for rural communities.
4. It is a renewable resource as the silk worms can be reared again and again.
5. It is a high-value product that has a huge demand in both domestic and international markets.
Conclusion
Sericulture is an important activity that has the potential to transform the lives of farmers in rural areas. It is a sustainable and eco-friendly activity that provides a source of income and employment to rural communities. With proper training and support, sericulture can be a profitable business for farmers.
Sericulture is the term given to the commercial rearing of silk worms to supplement the income of the farmer. It is a lucrative business and is practiced mainly in the rural areas of India. The practice of sericulture involves the cultivation of mulberry trees, which provide the food for the silk worms.
Process of Sericulture
The process involves the following steps:
1. Mulberry cultivation: Farmers cultivate mulberry trees to provide food for the silk worms.
2. Egg production: Female silk moths lay eggs which are collected and kept in a cool place until they hatch.
3. Rearing of silk worms: The eggs hatch into silk worms, which are then reared in trays. The silk worms are fed with fresh mulberry leaves every day.
4. Cocoon formation: After about 25-30 days, the silk worms stop eating and start spinning cocoons around themselves.
5. Silk extraction: After about 10-12 days, the cocoons are ready to be harvested. The silk is extracted from the cocoons by boiling them in water.
6. Weaving: The silk is then spun into thread and woven into fabric.
Benefits of Sericulture
Sericulture has several benefits:
1. It provides a source of income for farmers.
2. It is an eco-friendly activity as it involves the cultivation of mulberry trees.
3. It provides employment opportunities for rural communities.
4. It is a renewable resource as the silk worms can be reared again and again.
5. It is a high-value product that has a huge demand in both domestic and international markets.
Conclusion
Sericulture is an important activity that has the potential to transform the lives of farmers in rural areas. It is a sustainable and eco-friendly activity that provides a source of income and employment to rural communities. With proper training and support, sericulture can be a profitable business for farmers.
Dark soils of the Deccan plateau in Maharashtra is a good example of ____________- a)Renewable Resources
- b)Actual Resources
- c)Potential Resources
- d)Human made Resources
Correct answer is option 'B'. Can you explain this answer?
Dark soils of the Deccan plateau in Maharashtra is a good example of ____________
a)
Renewable Resources
b)
Actual Resources
c)
Potential Resources
d)
Human made Resources
|
|
Rajesh Khatri answered |
Actual resources :-
The actual resources are those that have been surveyed and put to good use and their total quantity and quality is determined and they are being used in the present times.
Example of Actual resources -
# The petroleum which is obtained from Mumbai High.
# The rich deposits of coal in Ruhr in Germany.
# The dark soil of the Deccan Plateau in Maharashtra.
Name the type of farming practiced to meet the needs of the farmer's family i.e.- a)Mixed Farming
- b)Subsistence Farming
- c)Commercial Farming
- d)Plantation agriculture
Correct answer is option 'B'. Can you explain this answer?
Name the type of farming practiced to meet the needs of the farmer's family i.e.
a)
Mixed Farming
b)
Subsistence Farming
c)
Commercial Farming
d)
Plantation agriculture
|
|
Pooja Choudhury answered |
Subsistence farming, form of farming in which nearly all of the crops or livestock raised are used to maintain the farmer and the farmer's family, leaving little, if any, surplus for sale or trade.
A few factors affecting the location of industries are given below. Complete the list, by choosing the one that can be added to this list . 
- a)Policy decisions
- b)Size
- c)Ownership
- d)Labour
Correct answer is option 'D'. Can you explain this answer?
A few factors affecting the location of industries are given below. Complete the list, by choosing the one that can be added to this list .
a)
Policy decisions
b)
Size
c)
Ownership
d)
Labour
|
|
Amit Kumar answered |
As the main factor of the industry is labour. Labour is the only factor that carries out the work. Thus labour is an important factor of industry.
What would you call resources of limited stock ?- a)Renewable Resources
- b)Localised Resources
- c)Human-made Resources
- d)Non-renewable Resources
Correct answer is option 'D'. Can you explain this answer?
What would you call resources of limited stock ?
a)
Renewable Resources
b)
Localised Resources
c)
Human-made Resources
d)
Non-renewable Resources
|
|
Sanvi Kapoor answered |
The term 'non-renewable' suggests the limited nature of a natural resource. Essentially, the term can be used for any resource that cannot be recovered from the earth readily, after once it has been exhausted. For example: Coal:- it takes thousands of years for coal to form in-between the rocky layers of earth from organic materials that have decomposed. Whereas wind is a renewable resource, it is not limited.
Can you explain the answer of this question below:Pick out the correct word from the given list of options and complete the following statement: A_________________ is anything that can be used to satisfy human wants and has a value.- A:Potential
- B:Resource
- C:Skill
- D:Patent
The answer is B.
Pick out the correct word from the given list of options and complete the following statement: A_________________ is anything that can be used to satisfy human wants and has a value.
A:
Potential
B:
Resource
C:
Skill
D:
Patent
|
|
Sahana Patel answered |
Resource is the correct answer.
Explanation:
A resource is anything that can be used to satisfy human wants and has a value. In economics, resources refer to all the factors of production that are used in the production process to create goods and services. Resources can be broadly classified into three categories:
1. Natural resources: These are the resources that are found in nature and can be used in their natural form or after processing. Examples include land, water, air, minerals, and forests.
2. Human resources: These are the resources that are created by human beings through education, training, and experience. Examples include labor, knowledge, and skills.
3. Capital resources: These are the resources that are created by human beings to aid in the production process. Examples include machinery, equipment, and tools.
Resources play a critical role in the economy, as they are used to produce goods and services that satisfy human wants and needs. The availability and efficient use of resources are key determinants of economic growth and development.
Explanation:
A resource is anything that can be used to satisfy human wants and has a value. In economics, resources refer to all the factors of production that are used in the production process to create goods and services. Resources can be broadly classified into three categories:
1. Natural resources: These are the resources that are found in nature and can be used in their natural form or after processing. Examples include land, water, air, minerals, and forests.
2. Human resources: These are the resources that are created by human beings through education, training, and experience. Examples include labor, knowledge, and skills.
3. Capital resources: These are the resources that are created by human beings to aid in the production process. Examples include machinery, equipment, and tools.
Resources play a critical role in the economy, as they are used to produce goods and services that satisfy human wants and needs. The availability and efficient use of resources are key determinants of economic growth and development.
High speed winds, solar energy, bio waste etc were all considered as potential sources of energy in the past, but today they are all examples of ___________- a)Non-Renewable Resources
- b)Actual Resources
- c)Ubiquitous Resources
- d)Localised Resources
Correct answer is option 'B'. Can you explain this answer?
High speed winds, solar energy, bio waste etc were all considered as potential sources of energy in the past, but today they are all examples of ___________
a)
Non-Renewable Resources
b)
Actual Resources
c)
Ubiquitous Resources
d)
Localised Resources
|
|
Amit Sharma answered |
Due to increasing demand in this fast moving world and rapid industrialization, there is substantial increase in usage of natural biotic resources which are offcourse limited. With increasing the cost of these resources, people started to look after other renewable resources not just because of availability but also to reduce the hazards i.e. Air Pollution, Water Pollution etc. caused by resources like fossil fuels and petroleum. So more the renewable energy got into picture, people started to understand it's importance and as a result due to even low cost these are getting status of actual resources. Summarising in following points to the answer - 1. Limited Biotic Resources 2. Health and Environmental hazards by Nuclear Energy and Pollution 3. Wind Power, Bio Waste and Solar Energy are cheap and renewable. 4. Also these are unharmful to environment.
All living organisms including the flora and fauna are classified under- a)Renewable Resources
- b)Potential Resources
- c)Biotic Resources
- d)Abiotic Resources
Correct answer is option 'C'. Can you explain this answer?
All living organisms including the flora and fauna are classified under
a)
Renewable Resources
b)
Potential Resources
c)
Biotic Resources
d)
Abiotic Resources
|
|
Ananya Das answered |
Biotic resources are resources derived from the biosphere such as living things and from forest and the materials derived from them. This mainly include fossil fuels like petroleum, coal gas, etc. Abiotic means other than living things that mean non-living things examples are fresh air, land ,heavy metal.
Name the important Western industrial region in India- a)Chottanagpur belt
- b)Damodar Valley belt
- c)Delhi ,Gurgaon- Meerut region
- d)Ahmedabad- Vadodara region
Correct answer is option 'D'. Can you explain this answer?
Name the important Western industrial region in India
a)
Chottanagpur belt
b)
Damodar Valley belt
c)
Delhi ,Gurgaon- Meerut region
d)
Ahmedabad- Vadodara region
|
|
Malavika Basu answered |
India has several industrial regionslike Mumbai- Pune cluster, Bangalore-Tamil Nadu region, Hugli region, Ahmedabad-Baroda region, Chottanagpur industrial belt, Vishakhapatnam-Guntur belt, Gurgaon-Delhi-Meerut region and the Kollam Thiruvanathapuram industrial cluster.
Practice Quiz or MCQ (Multiple Choice Questions) with solutions are available for Practice, which would help you prepare for chapter Mineral and Power Resources, Class 8, Social Science Studies. You can practice these practice quizzes as per your speed and improvise the topic.Q.What would you call a naturally occurring substance that has a definite chemical composition- a)Resources
- b)Mineral
- c)Atmosphere
- d)Environment
Correct answer is option 'B'. Can you explain this answer?
Practice Quiz or MCQ (Multiple Choice Questions) with solutions are available for Practice, which would help you prepare for chapter Mineral and Power Resources, Class 8, Social Science Studies. You can practice these practice quizzes as per your speed and improvise the topic.
Q.
What would you call a naturally occurring substance that has a definite chemical composition
a)
Resources
b)
Mineral
c)
Atmosphere
d)
Environment
|
Vikas Choudhury answered |
A mineral is a homogeneous naturally occurring substance with a definite but not necessarily fixed chemical composition. Most minerals are solids with an ordered atomic arrangement, and most are inorganic in the chemical sense of that word.
Some examples of minerals are given below, pick out the one that is not a metallic mineral- a)Gold
- b)Bauxite
- c)Limestone
- d)Iron Ore
Correct answer is 'C'. Can you explain this answer?
Some examples of minerals are given below, pick out the one that is not a metallic mineral
a)
Gold
b)
Bauxite
c)
Limestone
d)
Iron Ore
|
|
Abhishek Phogat answered |
Limestone or calcium carbonate, CaCo3
Some important techniques to cope with Land slide are given below. Pick out the one that is not applicable.- a)Construction of retention wall to stop land from slipping.
- b)Implementation of the surface drainage control
- c)Decrease in vegetation cover
- d)Hazard mapping locate areas prone to landslides
Correct answer is option 'C'. Can you explain this answer?
Some important techniques to cope with Land slide are given below. Pick out the one that is not applicable.
a)
Construction of retention wall to stop land from slipping.
b)
Implementation of the surface drainage control
c)
Decrease in vegetation cover
d)
Hazard mapping locate areas prone to landslides
|
Amoolya Anil answered |
Decrease in vegetation will increase landslide.So it is not applicable. Increase in vegetation will help to prevent landslide because plant root will hold the soil firmly preventing from landslide.
A few physical factors that determine the use of land are given below. Pick out the one that is not a physical factor- a)Availability of capital
- b)Minerals and Availability of Water
- c)Topography and Soil
- d)Climate
Correct answer is option 'A'. Can you explain this answer?
A few physical factors that determine the use of land are given below. Pick out the one that is not a physical factor
a)
Availability of capital
b)
Minerals and Availability of Water
c)
Topography and Soil
d)
Climate
|
|
Deepa Iyer answered |
The use of land is determined by physical factors such as topography, soil,climate, minerals and availability of water. Human factors such as population density, available of capital and technology are also important determinants of land use pattern.
This particular classification of industry requires large amounts of capital, huge machines and modern and superior technology to manufacture goods. Employing huge number of employees like the iron and steel industry , the production is on a mass scale and is voluminous. Mention the type of industry to which this classification belong to- a)Small Scale industries
- b)Medium Scale industries
- c)Large Scale industries
- d)Cottage industries
Correct answer is option 'C'. Can you explain this answer?
This particular classification of industry requires large amounts of capital, huge machines and modern and superior technology to manufacture goods. Employing huge number of employees like the iron and steel industry , the production is on a mass scale and is voluminous. Mention the type of industry to which this classification belong to
a)
Small Scale industries
b)
Medium Scale industries
c)
Large Scale industries
d)
Cottage industries
|
|
Sanvi Kapoor answered |
If this much material is used and professionals are from different sectors surely it belongs to large scale industry.
From the following list , pick out the percent of total population that lives in Asia alone.- a)80
- b)20
- c)60
- d)40
Correct answer is option 'C'. Can you explain this answer?
From the following list , pick out the percent of total population that lives in Asia alone.
a)
80
b)
20
c)
60
d)
40
|
Ashwin Jain answered |
Asia is the most populous continent, with its 4.54 billion inhabitants accounting for 60% of the world population. The world's two most populated countries, China and India, together constitute about 36% of the world's population.
A few important statements with respect to the Human Resources are given below. Pick out the one that is not TRUE- a)The numbers and characteristics of human resources do not change.
- b)Human resource is the ultimate resource
- c)Human resources like other resources are not equally distributed
- d)Human resources differ in educational levels, age and sex
Correct answer is option 'A'. Can you explain this answer?
A few important statements with respect to the Human Resources are given below. Pick out the one that is not TRUE
a)
The numbers and characteristics of human resources do not change.
b)
Human resource is the ultimate resource
c)
Human resources like other resources are not equally distributed
d)
Human resources differ in educational levels, age and sex
|
|
Kavya Saxena answered |
As human resources are unlimited resources they change in numbers as well as they have different characteristics.
Which industries are also known as village or household industries?- a)Small Scale industries
- b)Cottage industries
- c)Large Scale industries
- d)None of the above
Correct answer is option 'B'. Can you explain this answer?
Which industries are also known as village or household industries?
a)
Small Scale industries
b)
Cottage industries
c)
Large Scale industries
d)
None of the above
|
Sounak Sengupta answered |
A cottage industry is a small-scale, decentralized manufacturing business often operated out of a home rather than a purpose-built facility. Cottage industries are defined by the amount of investment required to start, as well as the number of people employed.
On the basis of origin, Natural resources can be classified as____________ and ________.- a)Biotic and Abiotic resources
- b)Renewable and Non Renewable
- c)Actual and Potential resources
- d)Ubiquitous and Localised resources
Correct answer is option 'A'. Can you explain this answer?
On the basis of origin, Natural resources can be classified as____________ and ________.
a)
Biotic and Abiotic resources
b)
Renewable and Non Renewable
c)
Actual and Potential resources
d)
Ubiquitous and Localised resources
|
|
Varun Kapoor answered |
On the basis of origin resources are of 2 types-
1) biotic resources
biotic resources are also known as living resources.they include plants,animals and microorganisms.thus,they are renewable
for example-agricultural crops,wild and domestic animals etc
2) abiotic resources
we get abiotic resources from physical or non living environment. these resources can be exhausted after excessive use. thus these resources are non renewable.
for example-land,water,air etc
Which agricultural method involves high yielding varieties (HYV) of seeds and mechanization?- a)Subsistence farming
- b)Organic farming
- c)Intensive farming
- d)Commercial farming
Correct answer is option 'C'. Can you explain this answer?
a)
Subsistence farming
b)
Organic farming
c)
Intensive farming
d)
Commercial farming
|
EduRev Class 8 answered |
Intensive farming involves the use of high yielding varieties (HYV) of seeds, mechanization, and other modern agricultural practices to increase crop production, especially in developing countries with large populations.
Balancing the need to use resources and also conserve them for the future is called- a)sustainable development
- b)resource conservation
- c)resource development
- d)human resource development
Correct answer is option 'A'. Can you explain this answer?
Balancing the need to use resources and also conserve them for the future is called
a)
sustainable development
b)
resource conservation
c)
resource development
d)
human resource development
|
|
Varun Kapoor answered |
Sustainable development is development that meets the needs of the present, without compromising the ability of future generations to meet their own needs. It is an approach to development that looks to balance different, and often competing, needs against an awareness of the environmental, social and economic limitations we face as a society.
On the other hand, The conservation of natural resources and the development of a natural resource into man-useful resource, such as wood into furniture and cotton into clothes, is called resource development.
A few reasons as to why there is uneven distribution of population in different parts of the world are given below. Pick out the most appropriate reason.- a)Due to varied characteristics of land and climate
- b)Due to the fact that earth is the only heavenly body in the universe
- c)Due to the fact that water covers only about 70% of the total area
- d)Due to the fact that land covers only about 30% of the total area
Correct answer is option 'A'. Can you explain this answer?
A few reasons as to why there is uneven distribution of population in different parts of the world are given below. Pick out the most appropriate reason.
a)
Due to varied characteristics of land and climate
b)
Due to the fact that earth is the only heavenly body in the universe
c)
Due to the fact that water covers only about 70% of the total area
d)
Due to the fact that land covers only about 30% of the total area
|
|
Ananya Das answered |
The shape of the land ('relief') Climate can be affected by mountains. Mountains receive more rainfall than low lying areas because as air is forced over the higher ground it cools, causing moist air to condense and fall out as rainfall. The higher the place is above sea level the colder it will be.
Osaka in Japan and Mumbai in India are two densely populated areas. Give reason- a)These areas are topographically favourable.
- b)These are areas of religious significance
- c)They are industrial belts providing large employment opportunities
- d)These are areas with excellent climatic conditions
Correct answer is option 'C'. Can you explain this answer?
Osaka in Japan and Mumbai in India are two densely populated areas. Give reason
a)
These areas are topographically favourable.
b)
These are areas of religious significance
c)
They are industrial belts providing large employment opportunities
d)
These are areas with excellent climatic conditions
|
|
Geetika Shah answered |
As this region has highly developed and provided more employment opportunities.
Name the term given to the Breeding of Fish in specially constructed tanks and ponds- a)Sericulture
- b)Pisciculture
- c)Horticulture
- d)Viticulture
Correct answer is option 'B'. Can you explain this answer?
Name the term given to the Breeding of Fish in specially constructed tanks and ponds
a)
Sericulture
b)
Pisciculture
c)
Horticulture
d)
Viticulture
|
|
Anita Menon answered |
Pisciculture also known as fish farming is the rearing of fish for food in enclosures such as fish ponds or tanks. The fish are reared and raised in enclosures such as cages, open nets, tanks and ponds.
Name the three important industrial regions of the world.- a)Eastern North America, Western and Central Europe, Eastern Asia
- b)Eastern Australia, Western and central Europe, Eastern Asia
- c)Eastern North America, Western and Central Europe, Western Australia
- d)Africa, Eastern Asia, Central Australia
Correct answer is option 'A'. Can you explain this answer?
Name the three important industrial regions of the world.
a)
Eastern North America, Western and Central Europe, Eastern Asia
b)
Eastern Australia, Western and central Europe, Eastern Asia
c)
Eastern North America, Western and Central Europe, Western Australia
d)
Africa, Eastern Asia, Central Australia
|
|
Pooja Shah answered |
we see hows these country get modernised by establishing more and more industry.
Banking, Insurance sectors etc can be a good example of which of the following type of economic activity- a)Tertiary
- b)Primary
- c)Secondary
- d)Primary and Secondary
Correct answer is option 'A'. Can you explain this answer?
Banking, Insurance sectors etc can be a good example of which of the following type of economic activity
a)
Tertiary
b)
Primary
c)
Secondary
d)
Primary and Secondary
|
|
Aditi Saxena answered |
Tertiary Sector Refers to Commercial Services
The tertiary sector of the economy is the service industry. Service companies do not provide a physical good like the primary or secondary sectors do, but they still provide value. For example, banks, insurance and the police all are examples of the service industry. Industries included in the primary or secondary sectors will typically have employees that provide tertiary services such as advertising, accountants and warehousing employees. The tertiary sector is usually strongest in advanced market economies.
Which one of the following best describe a Metal- a)A substance without any definite shape
- b)Substances without any physical properties
- c)Hard substances that conduct heat and electricity and have a characteristic lustre or shine.
- d)Substances without chemical composition
Correct answer is option 'C'. Can you explain this answer?
Which one of the following best describe a Metal
a)
A substance without any definite shape
b)
Substances without any physical properties
c)
Hard substances that conduct heat and electricity and have a characteristic lustre or shine.
d)
Substances without chemical composition
|
Ojasvi Mehta answered |
Metals : Metals are the elements which can easily loose electrons and forms cations.
Properties of metals :
- They are lustrous (shine).
- They are malleable and ductile (flexible).
- They conduct heat and electricity.
- The metallic oxides are basic in nature.
- They form cations in an aqueous solution.
Non-metals : Non-metals are the elements which can easily gain electrons and form an anion.
Properties of non-metals :
- They are non-lustrous.
- They are brittle and hard in nature.
- They do not conduct heat and electricity.
- The non-metallic oxides are acidic in nature.
- They form anions in an aqueous solution.
Hence, from the given options the correct option for metal is, Malleable, shiny, and able to conduct heat or electricity.
From the following options given, pick out the correct reason as to why impurities should be removed from mineral ores?- a)To convert mineral ores into useful materials
- b)To obtain large quantities of mineral ores
- c)To avoid drilling, mining etc
- d)To retain the minerals in its pure state.
Correct answer is option 'A'. Can you explain this answer?
From the following options given, pick out the correct reason as to why impurities should be removed from mineral ores?
a)
To convert mineral ores into useful materials
b)
To obtain large quantities of mineral ores
c)
To avoid drilling, mining etc
d)
To retain the minerals in its pure state.
|
Rhea Kulkarni answered |
**Explanation:**
The correct reason as to why impurities should be removed from mineral ores is option 'A', which states that it is done to convert mineral ores into useful materials. Let's understand why this is the correct reason.
**Conversion of mineral ores into useful materials:**
- Mineral ores are naturally occurring rocks that contain valuable minerals. However, they are usually found in combination with impurities, which are unwanted substances.
- Impurities may include materials such as dirt, rock, clay, and other non-valuable minerals.
- In order to extract the valuable minerals from the ore and convert them into useful materials, it is necessary to remove these impurities.
**Importance of removing impurities:**
- Removal of impurities is an essential step in the processing of mineral ores because impurities can affect the quality and purity of the final product.
- Impurities can reduce the efficiency and effectiveness of various industrial processes that use mineral ores as raw materials.
- Impurities can also impact the physical, chemical, and mechanical properties of the final product, making it less desirable or even unusable for certain applications.
**Methods for removing impurities:**
- Various methods are employed to remove impurities from mineral ores, depending on the nature of the impurities and the properties of the ore.
- Common techniques include crushing and grinding the ore to separate it from impurities, as well as physical separation methods such as gravity separation, magnetic separation, and flotation.
- Chemical processes such as leaching, roasting, and smelting can also be used to remove impurities from specific types of ores.
**Benefits of removing impurities:**
- By removing impurities from mineral ores, we can obtain materials that are more pure and suitable for various industries.
- These purified materials can be used in the production of metals, alloys, ceramics, glass, fertilizers, and many other products.
- The removal of impurities also increases the economic value of the ore, as the purified materials can be sold at higher prices in the market.
In conclusion, the correct reason for removing impurities from mineral ores is to convert them into useful materials. This process is essential to ensure the quality, purity, and economic value of the final products derived from mineral ores.
The correct reason as to why impurities should be removed from mineral ores is option 'A', which states that it is done to convert mineral ores into useful materials. Let's understand why this is the correct reason.
**Conversion of mineral ores into useful materials:**
- Mineral ores are naturally occurring rocks that contain valuable minerals. However, they are usually found in combination with impurities, which are unwanted substances.
- Impurities may include materials such as dirt, rock, clay, and other non-valuable minerals.
- In order to extract the valuable minerals from the ore and convert them into useful materials, it is necessary to remove these impurities.
**Importance of removing impurities:**
- Removal of impurities is an essential step in the processing of mineral ores because impurities can affect the quality and purity of the final product.
- Impurities can reduce the efficiency and effectiveness of various industrial processes that use mineral ores as raw materials.
- Impurities can also impact the physical, chemical, and mechanical properties of the final product, making it less desirable or even unusable for certain applications.
**Methods for removing impurities:**
- Various methods are employed to remove impurities from mineral ores, depending on the nature of the impurities and the properties of the ore.
- Common techniques include crushing and grinding the ore to separate it from impurities, as well as physical separation methods such as gravity separation, magnetic separation, and flotation.
- Chemical processes such as leaching, roasting, and smelting can also be used to remove impurities from specific types of ores.
**Benefits of removing impurities:**
- By removing impurities from mineral ores, we can obtain materials that are more pure and suitable for various industries.
- These purified materials can be used in the production of metals, alloys, ceramics, glass, fertilizers, and many other products.
- The removal of impurities also increases the economic value of the ore, as the purified materials can be sold at higher prices in the market.
In conclusion, the correct reason for removing impurities from mineral ores is to convert them into useful materials. This process is essential to ensure the quality, purity, and economic value of the final products derived from mineral ores.
Name the important Northern industrial region in India- a)Delhi ,Gurgaon- Meerut region
- b)Bangalore- Tamil Nadu region
- c)Ahmedabad- Vadodara region
- d)Damodar Valley belt
Correct answer is option 'A'. Can you explain this answer?
Name the important Northern industrial region in India
a)
Delhi ,Gurgaon- Meerut region
b)
Bangalore- Tamil Nadu region
c)
Ahmedabad- Vadodara region
d)
Damodar Valley belt
|
|
Anjali Kapoor answered |
Industrial region or industrial area refers to a geographical region with extremely dense industry. It is usually heavily urbanized.
What does the following image infer? 
- a)Balanced population
- b)Decrease in population
- c)Increase in population
- d)All of the above
Correct answer is option 'B'. Can you explain this answer?
What does the following image infer?
a)
Balanced population
b)
Decrease in population
c)
Increase in population
d)
All of the above
|
C K Academy answered |
The image implies a decrease in population.
- Therefore, the correct answer is B: Decrease in population.
- Therefore, the correct answer is B: Decrease in population.
Which of the following countries do not have huge reserves of Petroleum and natural gas?- a)Iran
- b)Iraq
- c)China
- d)Saudi Arabia
Correct answer is option 'C'. Can you explain this answer?
Which of the following countries do not have huge reserves of Petroleum and natural gas?
a)
Iran
b)
Iraq
c)
China
d)
Saudi Arabia
|
|
Sanvi Kapoor answered |
5 major countries that have huge reserves in petroleum and natural gas are Venezuela, Saudi arabia, Canada, Iran, Iraq.
The number of deaths per 1,000 people refer to- a)Migration
- b)Birth Rate
- c)Death rate
- d)Population change
Correct answer is option 'C'. Can you explain this answer?
The number of deaths per 1,000 people refer to
a)
Migration
b)
Birth Rate
c)
Death rate
d)
Population change
|
|
Ashwin Jain answered |
Death rate, crude (per 1,000 people)
Definition: Crude death rate indicates the number of deaths occurring during the year, per 1,000 population estimated at midyear.
Which one from the following refers to Census?- a)The process of counting the number of states in a country
- b)The process of taking a count of total number of people in a country
- c)The process of counting the land area in a country
- d)The process of counting the mountains and hilly terrains in a country
Correct answer is option 'B'. Can you explain this answer?
Which one from the following refers to Census?
a)
The process of counting the number of states in a country
b)
The process of taking a count of total number of people in a country
c)
The process of counting the land area in a country
d)
The process of counting the mountains and hilly terrains in a country
|
|
Amit Kumar answered |
A census is the procedure of systematically acquiring and recording information about the members of a given population.
Thorium is found in large quantities in the Monazite sands of an important state of India. From the options given, choose the state.- a)Orissa
- b)Kerala
- c)Maharashtra
- d)Madhya Pradesh
Correct answer is option 'B'. Can you explain this answer?
Thorium is found in large quantities in the Monazite sands of an important state of India. From the options given, choose the state.
a)
Orissa
b)
Kerala
c)
Maharashtra
d)
Madhya Pradesh
|
|
Aditya Kumar answered |
The largest concentration of monazite sand is on the Kerala coast.
The major factors of soil formation are the nature of parent rock and __________- a)Deforestation
- b)Soil Erosion
- c)Overgrazing
- d)Climatic factors
Correct answer is option 'D'. Can you explain this answer?
The major factors of soil formation are the nature of parent rock and __________
a)
Deforestation
b)
Soil Erosion
c)
Overgrazing
d)
Climatic factors
|
Divyansh Gupta answered |
Factors that affect soil formation. Soils form from the interplay of five main factors namely Parent material, Time, Climate, Relief and Organisms. Parent material: Soils will carry the characteristics of its parent materialsuch as color, texture, structure, mineral composition and so on.
On the basis of their use and development, Natural resources can be classified as ________ and ________.- a)Biotic and Abiotic resources
- b)Actual and Potential resources
- c)Renewable and Non Renewable
- d)Ubiquitous and Localised resources
Correct answer is option 'B'. Can you explain this answer?
On the basis of their use and development, Natural resources can be classified as ________ and ________.
a)
Biotic and Abiotic resources
b)
Actual and Potential resources
c)
Renewable and Non Renewable
d)
Ubiquitous and Localised resources
|
Neha Joshi answered |
Actual resource are resources whose quantity is known and are used in present.eg black soil in maharashtra . potential resources are resources whose quantity is not known and are not used in present.eg uranium in ladakh. Actual resources are coal,Water, petrol Potential resources are uranium in Ladakh etc.
Given below are some reasons as to why the rocky slopes of the mountains and low-lying areas are sparsely populated. Pick out the correct reason from the following
- a)The proportion of the rocky slopes of the mountains and low lying areas vary
- b)The quality and the fertility of the land in the rocky slopes of the mountains and low lying areas not suitable for cultivation.
- c)The rocky slopes of the mountains and low lying areas are prone to flooding during rainy seasons.
- d)Clearing of the forest land in the rocky slopes of the mountains and low lying areas has resulted in a reduction in the total land areas under the forests.
Correct answer is option 'B'. Can you explain this answer?
Given below are some reasons as to why the rocky slopes of the mountains and low-lying areas are sparsely populated. Pick out the correct reason from the following
a)
The proportion of the rocky slopes of the mountains and low lying areas vary
b)
The quality and the fertility of the land in the rocky slopes of the mountains and low lying areas not suitable for cultivation.
c)
The rocky slopes of the mountains and low lying areas are prone to flooding during rainy seasons.
d)
Clearing of the forest land in the rocky slopes of the mountains and low lying areas has resulted in a reduction in the total land areas under the forests.
|
|
Pooja Shah answered |
The quality and the fertility of the land in the rocky slopes of the mountains and low-lying areas are not suitable for cultivation.
The quality and the fertility of the land in the rocky slopes of the mountains and low lying areas are not suitable for cultivation. Also, these areas are very cold with extreme weather conditions.
The quality and the fertility of the land in the rocky slopes of the mountains and low lying areas are not suitable for cultivation. Also, these areas are very cold with extreme weather conditions.
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