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Chapter 3. Mineral and Power Resources

Chapter 3. Mineral and Power Resources:

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Q1.  Answer the following questions.

(i) Name any three common minerals used by you every day.

Answer: Three common minerals used by us in day-to-day lie are copper, iron and salt.

(ii) What is an ore? Where are the ores of metallic minerals generally located?

Answer: An ore is a rock room which minerals are mined. Ores of metallic minerals found usually in igneous and metamorphic rock formations.

(iii) Name two regions rich in natural gas resources.

Answer: Two regions in India rich in natural gas resources are : jaywalker and Krishna Godavari delta.

(iv) Which sources of energy would you suggest for

(a) Rural areas

Answer: or rural areas, solar energy and wind energy are feasible options. There aren’t many high-rise buildings to act obstacle for sunlight or to break the momentum of wind.

(b) Coastal areas

Answer: or coastal areas, wind energy and tidal energy and good choices.

(c) Arid regions

Answer: For arid regions, wind energy and solar energy and feasible, for reasons similar to rural areas.

(v) Give five ways in which you can save energy at home.

Answer:  five ways in which one can save energy at home:

(a) Promoting the use o solar energy as much as possible.

(b) Using biogas as cooking fuel.

(c) Drying clothes in sunlight instead o electric dryers to prevent emissions and unnecessary use of electricity.

(d) Avoiding misuse o electricity: switching o an and lights when not required.

(e) Using pressure cookers for cooking.

Q2. Tick the correct answer.

(i) Which one of the following is NOT a characteristic of minerals?

(a) They are created by natural processes.

(b) They have a definite chemical composition.

(c) They are inexhaustible.

(d) Their distribution is uneven.

Answer:  (c)

(ii) Which one of the following is NOT a producer of mica?

(a) Jharkhand 

(b) Karnataka

(c) Rajasthan

(d) Andhra Pradesh

Answer: (b)

(iii) Which one of the following is a leading producer of copper in the world?

(a) Bolivia

(c) Chile

(b) Ghana

(d) Zimbabwe

Answer: (c)

(iv) Which one of the following practices will NOT conserve LPG in your kitchen?

(a) Soaking the dal for some time before cooking it.

(b) Cooking food in a pressure cooker.

(c) Keeping the vegetables chopped before lighting the gas for cooking.

(d) Cooking food in an open pan kept on low flame.

Answer: (d)

Q3. Give reasons.

(i)  Environmental aspects must be carefully looked into before building huge dams.

Answer: Building huge dams’ causes’ destabilization of natural habitats of plants looked into before building dams.

(ii) Most industries are concentrated around coal mines.

Answer: presence of coal mines around industries reduces the costs of transportation and also ensures easy availability of fuel

(iii) Petroleum is referred to as “black gold”.

Answer: petroleum is a very valuable fusil fuel. It is used or running all machineries, transport vehicles, from a bicycle to an Aero plane. 

(iv) Quarrying can become a major environmental concern.

Answer: After quarrying, pits are not covered so they many cause environmental hazards.

Q4.  Distinguish between the followings.

(i) Conventional and non conventional sources of energy

Answer:

(ii) Biogas and natural gas

Answer: 

(iii) Ferrous and nonferrous minerals

Answer: 

(iv) Metallic and nonmetallic minerals 

Answer:

Chapter 3. Mineral and Power Resources

Additional - Question:

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Que: Distribution of Minerals in India?

Ans: 

• Iron: It is normally found in states of Jharkhand, Orissa, Chhattisgarh, Madhya Pradesh, Goa, Maharashtra and Karnataka.

• Bauxite: Jharkhand, Orissa, Madhya Pradesh and Tamil Nadu are main producers.

• Mica: Bihar, Jharkhand, Rajasthan & Andhra Pradesh.

• Copper: Rajasthan, Madhya Pradesh, Jharkhand and Andhra Pradesh are major producers. 

• Manganese: Madhya Pradesh, Maharashtra, Madhya Pradesh, Rajasthan, Tamil Nadu & Gujarat have sufficient quantities 

• Limestone: Jharkhand, Madhya Pradesh, Chhattisgarh, Orissa, Gujarat and Tamil Nadu

• Gold: Karnataka is major reservoir

• Salt: Various seas, lakes & rocks

• Use of Minerals

• Various industries are completely dependent upon the use of minerals.

• Hard minerals are normally used in gems and placed in different forms of jewellery.

• From coins to pipes, every single item can be seen as  made of copper.

• There is also extensive use of silicon in the computer industry.

​Que: Conservation of Minerals?

Ans: Minerals are such resources of nature which are not renewable in nature. Minerals are normally formed & concentrated by thousands of years. The wastage must be reduced in the mining procedure. Mineral resources can also be conserved by the process of recycling.

Que: What do you mean by mind engergh?

Ans: Wind energy is the energy that is obtained by the speed of moving wind. This source of energy is considered as an inexhaustible or renewable source of energy. Wind energy is obtained when the speed of moving wind rotates the windmill which is connected to a generator that converts the wind converts the wind energy to electricity. Wind energy can be generally found in open spaces as the wind blow at high speed in these areas. Wind energy is a clean and pure form of energy.

Que: What is Biogas?

Ans: Biogas is the energy that is obtained from organic like dead plants, kitchen waste, cow dung, and other organic materals. These organic wates are put in large containers or pits called biogas digesters and are decomposed by bacterial action. After certain days, The digester emits biogas which is a mixture of methane gas and carbon dioxide. Biogas is considered as an excellent fuel used for cooking. It produces a high amount of heat and light. Biogas is eco - friendly in nature, but producing this energy is challenging as well as costly.