Solutions Chapter 3. Mineral and Power Resources - Exercise NCERT | Class 8 Geography - Toppers Study

Solutions Chapter 3. Mineral and Power Resources - Exercise NCERT | Class 8 Geography - Toppers Study

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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: