Mineral Resources - 1 Class 4 Worksheet SST

Q1: Fill in the blanks.

(i) _________ and ___________ are the famous coal mines.
Ans: Jharia coalfield and Dhanbad
Jharia coalfield is a large coal field located in the east of India in Jharia, Jharkhand. Jharia represents the largest coal reserves in India having estimated reserves of 19.4 billion tonnes of coking coal.
Dhanbad: One of the oldest in Jharkhand and the richest coalfields of India. It is the storehouse of the best metallurgical coal i.e. coking coal.

(ii) ___________ energy can be a good substitute for petroleum.
Ans: Plant oil
The obvious substitutes for petroleum are plant oils and fats because they have the same base chemical structure as petroleum.

(iii) __________ are impure metallic substances as they come out of the mines.
Ans: Ores
An ore is a rock that contains enough metal to make it worthwhile extracting. The ore is crushed, then ground into powder.

(iv) Petroleum is being pumped out from beneath the sea bed at __________.
Ans: well
The oil wells are drilled by using drilling rigs. When an oil well is drilled through the rocks,natural gas comes out first with a great pressure and for a time,the crude petroleum oil comes out by itself due to gas pressure. After the gas pressure has subsided, petroleum is pumped out of the oil well.

(v) ______________ are deep holes dug to bring out minerals.
Ans: Mines
Mines are deep holes dug to bring out minerals. Mines are excavations or openings in the Earth's crust made to extract valuable minerals, ores, metals, or other geological materials. These minerals are typically found underground and need to be extracted through mining operations, which can range from simple digging to complex underground tunnels and shafts.

Q2: True or False.

(i) There is a big coal mine at Rourkela.
Ans: True
Bolani and Barsuan are the two most prominent mines situated near the town. Rourkela is situated in a hilly region.

(ii) Petroleum will last forever.
Ans: False
Petroleum, like coal and natural gas, is a non-renewable source of energy. It took millions of years for it to form, and when it is extracted and consumed, there is no way for us to replace it.

(iii) There are a number of oil refineries in Assam.
Ans: True
Assam has 4 refineries-Noonmati refinery, Numaligarh Refinery, Bongaigaon Refinery, Digboi Refinery.

(iv) Manganese is used in making steel.
Ans: True
Magnesium is an essential alloy that helps convert iron into steel.

(v) Bihar has many coal mines.
Ans: False
As of now there is no coal mine in Bihar.

Q3: Tick the correct word.

(i) Mineral oil is refined to get____________.
(a) kerosene
(b) iron
(c) water
(d) None of these
Ans: (a)
Mineral oil is a liquid by-product of refining crude oil to make gasoline and other petroleum products.

(ii) Iron ore is found in___________.
(a) Himachal Pradesh
(b) Odisha
(c) Uttar Pradesh
(d) None of these
Ans: (b)
The major "hematite" type iron deposits are located in well defined belts in the States of Orissa, Jharkhand, Chhattisgarh, Maharashtra, Goa and Karnataka.

(iii) One of the causes of pollution is the use of _________.
(a) coal
(b) water
(c) sun-light
(d) none of these
Ans: (a)
One of the causes of pollution is the use of coal.

(iv) Mines are made to take out __________.
(a) metals
(b) ores
(c) minerals
(d) none of these
Ans: (b)
An ore is a rock that contains enough metal to make it worthwhile extracting. The ore is crushed, then ground into powder.

(v) One of the refineries is in__________.
(a) Delhi
(b) Mathura
(c) Goa
(d) None of these
Ans: (b)
The Mathura Refinery, owned by Indian Oil Corporation, is the sixth refinery of IndianOil located in Mathura, Uttar Pradesh, India.

(vi) Which of the following state is the leading producer of Bauxite ore?
(a) Orissa
(b) Madhya Pradesh
(c) West Bengal
(d) None of the above
Ans: (a)
Odisha (formerly known as Orissa) is one of the leading states in India in terms of bauxite production. Bauxite is an essential ore used in the production of aluminum, and Odisha has significant deposits of this mineral.

(v) Which of the following plateau is richest in minerals?
(a) Chota Nagpur plateau
(b) Deccan plateau
(c) Mysore plateau
(d) None of the above
Ans: (a)
The Chota Nagpur Plateau, located in the eastern part of India, is renowned for its rich mineral resources. It is particularly known for its coal, iron ore, and manganese deposits, making it one of the most mineral-rich regions in India.

(vi) Majhgawan mines are located in which of the following state?
(a) Uttar Pradesh
(b) Madhya Pradesh
(c) Andhra Pradesh
(d) None of the above
Ans: (b)
The Majhgawan mines are situated in the state of Madhya Pradesh. These mines are known for their significant production of diamonds.

(vii) Which of the following state is the leading producer of gold?
(a) Karnataka
(b) Madhya Pradesh
(c) West Bengal
(d) None of the above
Ans: (a)
Karnataka is one of the leading states in India for gold production. The Kolar Gold Fields in Karnataka were once one of the deepest and most productive gold mines in the world.

(viii) Which of the following coal is the most popular coal in commercial use?
(a) Lignite coal
(b) Anthracite coal
(c) Bituminous coal
(d) None of the above
Ans: (c)
Bituminous coal is the most commonly used coal in commercial and industrial applications. It is valued for its relatively high energy content and versatility. It is widely used for electricity generation, industrial processes, and heating.

Q4: Answer the following Questions.

(i) What is a mineral?
Ans: Minerals are naturally occurring homogenous substances with a specific internal structure.

(ii) What is a conventional source of energy?
Ans: A conventional source of energy is a non-renewable source of energy which can’t be renewed once exhausted. They are present in a limited quantity in the environment. Coal, oil, natural gas and fossil fuels are examples of some conventional sources of energy.

(iii) Explain different classes of iron ores.
Ans: There are four classes of iron ores:

• Magnetite: Magnetite is the best quality iron ore. It has the highest amount of iron up to 70 per cent with outstanding magnetic properties. It is also used in the electrical industries.
• Haematite: Haematite is the class of iron ore. It has about 50 to 60 per cent of iron and is one of the significant classes of iron used in industries.
• Limonite: Limonite is the class of iron ore. It has about 40 to 60 per cent of iron.
• Siderite: Siderite is the class of iron ore. It has about 40 to 50 per cent of iron.

(iv) Why is mining hazardous?
Ans: Mining is the process of extracting valuable minerals from the earth by digging. There are a lot of harmful effects of mining on the environment and human health.
A few of them are mentioned below:

• The toxic fumes and dust particles released during the mining can cause dangerous diseases like asthma and cardiovascular mortality.
• It can pollute the air and drinking water.
• It encourages deforestation, thereby leading to soil erosion and biodiversity loss.

(v) Name the mineral used for manufacturing
(a) Aluminium
(b) Cement
(c) Synthetics
Ans: (a) The mineral used for manufacturing aluminium is bauxite.
(b) The mineral used for manufacturing cement is limestone.
(c) The mineral used for manufacturing synthetics is oil or coal.

(vi) Write three uses of each of the following
(a) Copper _______________, ______________, ______
(b) Iron ________________, ______________, _________
(c) Aluminium ______________, _____________, ________
Ans: (a) Copper: The primary applications of copper are in electrical wiring, roofing, plumbing, and industrial machinery.
(b) Iron: Iron is used to make bridges, electricity pylons, bicycle chains, cutting tools and rifle barrels.
(c) Aluminium: Aluminium is used in a huge variety of products including cans, foils, kitchen utensils, window frames, beer kegs and aeroplane parts.