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