Part A — MCQs

1. Which characteristic makes a mineral different from an ordinary mixture of substances?
A. It is always metallic
B. It has a naturally formed, definite internal structure
C. It is always found in pure form
D. It can only be found underground

2. A mineral deposit is considered economically workable mainly when:
A. it is located near a river
B. it has a high concentration and can be extracted profitably
C. it occurs only in sedimentary rocks
D. it is visible on the Earth’s surface

3. In igneous and metamorphic rocks, relatively large mineral deposits occurring in cracks are called:
A. beds
B. placers
C. lodes
D. strata

4. Which mineral is characteristically associated with residual deposits formed after weathering?
A. Bauxite
B. Gold
C. Coal
D. Mica

5. Gold, silver, tin and platinum are commonly associated with:
A. veins
B. placer deposits
C. sedimentary layers
D. residual deposits

6. Which of the following is correctly matched?
A. Mica — cement industry
B. Limestone — electrical insulation
C. Copper — electrical cables
D. Bauxite — steel alloy

7. Which iron ore has the highest iron content among the ores discussed in the chapter?
A. Hematite
B. Magnetite
C. Lignite
D. Manganese

8. The Bailadila hills are particularly known for:
A. copper
B. high-grade hematite
C. bauxite
D. mica

9. Kudremukh is associated mainly with:
A. iron ore
B. petroleum
C. limestone
D. copper

10. Manganese is especially important in the manufacture of:
A. cement
B. steel
C. glass
D. petroleum

11. Copper is especially suitable for electrical applications because it is:
A. extremely hard
B. a good conductor and ductile
C. highly magnetic
D. a non-metal

12. Aluminium is obtained from:
A. mica
B. bauxite
C. limestone
D. hematite

13. Which mineral is particularly valuable for electrical and electronic industries because of its insulating properties?
A. Mica
B. Manganese
C. Limestone
D. Bauxite

14. Limestone is a major raw material for the:
A. textile industry
B. cement industry
C. petroleum industry
D. electronics industry

15. Which statement best explains why minerals need to be conserved?
A. They are produced every year in large quantities.
B. They are renewable within a short period.
C. They take extremely long periods to form and are being consumed rapidly.
D. They have no industrial importance.

16. Which of the following is a conventional source of energy?
A. Solar energy
B. Wind energy
C. Coal
D. Tidal energy

17. Which one is a non-conventional source of energy?
A. Petroleum
B. Natural gas
C. Coal
D. Solar energy

18. Which type of coal is described as the highest-quality hard coal?
A. Peat
B. Lignite
C. Bituminous
D. Anthracite

19. Which type of coal is widely used commercially?
A. Peat
B. Bituminous coal
C. Lignite
D. Anthracite only

20. Jharia, Raniganj and Bokaro are important:
A. petroleum fields
B. coalfields
C. copper mines
D. bauxite deposits

21. Why are thermal power stations often located near coalfields?
A. Coal is a lightweight fuel.
B. Coal becomes heavier after burning.
C. Coal is bulky and loses weight when converted to ash.
D. Coal can only be transported by water.

22. Which petroleum-producing area lies offshore on India’s western side?
A. Digboi
B. Mumbai High
C. Khetri
D. Kudremukh

23. Natural gas is commonly associated with:
A. petroleum deposits
B. mica deposits
C. bauxite deposits
D. limestone beds

24. Which fuel is commonly used as vehicle fuel and is represented by CNG?
A. Natural gas
B. Coal
C. Petroleum coke
D. Biogas only

25. Electricity generated using flowing water is called:
A. thermal power
B. hydroelectric power
C. nuclear power
D. geothermal power

26. Thermal power generation mainly depends on:
A. flowing water
B. fossil fuels
C. sunlight
D. tides

27. Photovoltaic technology is used to:
A. convert sunlight directly into electricity
B. convert coal into petroleum
C. extract copper from ore
D. generate electricity from tides

28. Which region is specifically identified in the chapter as having an important wind-energy cluster?
A. Tamil Nadu
B. Assam
C. Jharkhand
D. Punjab

29. Biogas is produced mainly through the decomposition of:
A. metallic ores
B. organic matter
C. petroleum
D. limestone

30. Which of the following pairs is correctly matched?
A. Tidal energy — Gulf of Khambhat
B. Geothermal energy — Mumbai High
C. Wind energy — Jharia
D. Solar energy — Khetri

31. Geothermal energy makes use of:
A. ocean tides
B. Earth’s internal heat
C. coal combustion
D. sunlight reflected by rocks

32. Which two approaches are identified as central to sustainable energy development?
A. Greater coal consumption and deeper mining
B. Energy conservation and greater use of renewable sources
C. More petroleum imports and less recycling
D. Increased firewood use and reduced efficiency

Part B — Fill in the Blanks

33. A mineral is a naturally occurring substance having a definite __________ structure.

34. Mineral accumulations that contain sufficient concentration for profitable extraction are called __________.

35. Small mineral occurrences in cracks of igneous and metamorphic rocks are called __________.

36. Large mineral deposits occurring in such cracks are called __________.

37. __________ is an important example of a mineral formed as a residual deposit after weathering.

38. Gold, silver, tin and platinum may occur in __________ deposits.

39. __________ is the finest iron ore discussed in the chapter.

40. The most important industrial iron ore by quantity is __________.

41. The Bailadila range is located in the __________ district of Chhattisgarh.

42. __________ is mainly used in steel manufacturing and ferro-manganese production.

43. The principal ore from which aluminium is obtained is __________.

44. The Koderma–Gaya–Hazaribagh belt is associated with __________.

45. __________ is the basic raw material for the cement industry.

46. India is highly dependent on __________ for a major part of its commercial energy requirements.

47. The highest-quality hard coal is called __________.

48. Mumbai High, Gujarat and Assam are important __________ producing regions.

49. CNG stands for __________.

50. PNG stands for __________.

51. Electricity generated using flowing water is called __________ power.

52. Electricity generated by burning coal, petroleum or natural gas is called __________ power.

53. __________ technology converts sunlight directly into electricity.

54. Organic waste can be used to produce __________.

55. Energy obtained from the Earth’s internal heat is called __________ energy.

Part C — True or False

56. All minerals are found in exactly the same geological formations.

57. The economic value of a mineral deposit depends partly on the ease and cost of extraction.

58. Bauxite is associated with residual deposits.

59. Magnetite has stronger magnetic properties than hematite.

60. Copper is useful in electrical industries because it conducts electricity well.

61. Limestone has no importance in the cement industry.

62. Mineral resources are generally considered non-renewable.

63. Coal is a fossil fuel.

64. Peat has a higher heating capacity than anthracite.

65. Petroleum is used only as a transport fuel.

66. Natural gas can be used as both CNG and PNG.

67. Hydroelectricity uses flowing water.

68. Thermal power mainly uses renewable fuels.

69. Solar energy can be particularly useful in rural and remote areas.

70. Biogas can be produced from animal and farm waste.

71. Energy conservation is unnecessary if renewable energy is available.

Part D — Assertion and Reason

Choose:

A. Both A and R are true, and R correctly explains A.
B. Both A and R are true, but R does not correctly explain A.
C. A is true, but R is false.
D. A is false, but R is true.

72.
Assertion (A): Mineral resources should be conserved.
Reason (R): Mineral formation is extremely slow compared with the present rate of consumption.

73.
Assertion (A): Copper is widely used in electrical equipment.
Reason (R): Copper is a good conductor and is also ductile.

74.
Assertion (A): Thermal power stations are often located close to coalfields.
Reason (R): Coal is bulky and loses weight when it is burned.

75.
Assertion (A): Renewable energy sources are becoming increasingly important.
Reason (R): Fossil-fuel dependence creates environmental and energy-security concerns.

76.
Assertion (A): Limestone is important to the cement industry.
Reason (R): Limestone is a major raw material used in cement production.

Part E — Match the Following

77.

Column A	Column B
1. Magnetite	a. Aluminium ore
2. Bauxite	b. Electrical industry
3. Mica	c. Finest iron ore
4. Limestone	d. Cement industry

78.

Column A	Column B
1. Jharia	a. Copper
2. Khetri	b. Coal
3. Digboi	c. Petroleum
4. Kudremukh	d. Iron ore

79.

Column A	Column B
1. Solar	a. Organic waste
2. Wind	b. Earth’s internal heat
3. Biogas	c. Sunlight
4. Geothermal	d. Moving air

80.

Column A	Column B
1. CNG	a. Household cooking fuel
2. PNG	b. Vehicle fuel
3. Hydel power	c. Flowing water
4. Thermal power	d. Fossil fuels

Part F — Very Short Answer Questions

81. What is a mineral?

82. What is an ore?

83. What are veins?

84. What are lodes?

85. What are placer deposits?

86. Name two ferrous minerals.

87. Name two non-ferrous minerals.

88. Name the two important types of iron ore discussed in the chapter.

89. Why is copper important for electrical industries?

90. What is bauxite?

91. Why is mica important in electrical industries?

92. State one major use of limestone.

93. Why are minerals called non-renewable resources?

94. Name two conventional energy sources.

95. Name two non-conventional energy sources.

96. What is anthracite?

97. What is CNG?

98. What is PNG?

99. What is hydroelectricity?

100. What is geothermal energy?

Part G — Short Answer Questions

101. Explain why minerals show differences in colour, hardness, lustre and density.

102. Distinguish between veins and lodes.

103. Explain how residual mineral deposits are formed.

104. Why are mineral resources unevenly distributed in India?

105. Explain why iron ore is considered important for industrial development.

106. Give three important uses of manganese.

107. Why is aluminium considered a useful industrial metal?

108. Explain the importance of mica in electrical and electronic industries.

109. Describe two major environmental effects of mining.

110. Why is conservation of minerals necessary?

111. Distinguish between conventional and non-conventional energy sources.

112. Explain the different grades or forms of coal mentioned in the chapter.

113. Why is petroleum called an important industrial resource?

114. Mention the major uses of natural gas.

115. Distinguish between hydroelectric and thermal power.

116. Why is solar energy considered promising for India?

117. Explain two advantages of biogas.

118. Why is there a growing need for renewable sources of energy?

Part H — Long Answer / 4–5 Mark Questions

119. Explain the major ways in which minerals occur in nature, giving suitable examples.

120. Describe the major iron-ore belts of India and identify their important features.

121. Explain the importance and distribution of copper and bauxite in India.

122. Discuss the major hazards associated with mining and suggest why stronger safety and environmental measures are necessary.

123. Explain why mineral resources need planned and sustainable use. Suggest suitable conservation measures.

124. Describe the distribution and uses of coal in India.

125. Explain the importance, occurrence and uses of petroleum and natural gas in India.

126. Compare hydroelectricity and thermal electricity with respect to their sources and major characteristics.

127. Explain the major non-conventional sources of energy discussed in the chapter.

128. Why should India reduce excessive dependence on fossil fuels? Explain the role of renewable energy in addressing this problem.

129. Explain how individuals can contribute to energy conservation in everyday life.

Part I — Case-Based Questions

Case 1

A mineral deposit may exist in large quantities, but that does not automatically mean it will become a working mine. The concentration of the mineral, the difficulty of extraction and the distance from markets can influence whether mining is economically practical.

130. Name one factor that determines whether a mineral deposit can be economically exploited.

131. Why does the concentration of mineral in an ore matter?

132. How can distance from the market influence mining decisions?

Case 2

Minerals take extremely long periods to form, while human consumption is much faster. Continued extraction may eventually require mining at greater depths and may also lead to the exploitation of lower-quality ores.

133. Why are minerals considered non-renewable?

134. What happens to extraction costs when easily accessible deposits are exhausted?

135. Suggest two ways of conserving mineral resources.

Case 3

A village has abundant sunlight and agricultural waste but relies heavily on firewood and conventional fuels. A renewable-energy programme is introduced using solar devices and biogas plants.

136. Which renewable source directly uses sunlight?

137. Which source could make use of animal and farm waste?

138. Give one environmental benefit of reducing dependence on firewood.

139. Why are renewable energy sources important for sustainable development?

Part J — Map-Based Practice

140. On an outline map of India, locate and label Bailadila.

141. Locate Kudremukh.

142. Mark the Koderma–Gaya–Hazaribagh mica belt.

143. Locate Khetri.

144. Mark Mumbai High.

145. Locate Digboi.

146. Mark the Krishna-Godavari Basin.

147. Locate an important wind-energy region in Tamil Nadu.

148. Mark Manikaran as a geothermal-energy location.

149. Locate Puga Valley.

Answer Key

MCQs

1-B, 2-B, 3-C, 4-A, 5-B, 6-C, 7-B, 8-B
9-A, 10-B, 11-B, 12-B, 13-A, 14-B, 15-C, 16-C
17-D, 18-D, 19-B, 20-B, 21-C, 22-B, 23-A, 24-A
25-B, 26-B, 27-A, 28-A, 29-B, 30-A, 31-B, 32-B

Fill in the Blanks

internal
ores
veins
lodes
bauxite
placer
magnetite
hematite
Bastar
manganese
bauxite
mica
limestone
coal
anthracite
petroleum
Compressed Natural Gas
Piped Natural Gas
hydroelectric
thermal
photovoltaic
biogas
geothermal

True/False

False
True
True
True
True
False
True
True
False
False
True
True
False
True
True
False

Assertion–Reason

72-A
73-A
74-A
75-A
76-A

Matching

1-c, 2-a, 3-b, 4-d
1-b, 2-a, 3-c, 4-d
1-c, 2-d, 3-a, 4-b
1-b, 2-a, 3-c, 4-d

Very Short Answers — Key Points

Naturally occurring substance with a definite internal structure.
Mineral-bearing material with sufficient concentration for economically viable extraction.
Small mineral deposits in cracks/joints.
Larger mineral deposits in cracks/joints.
Mineral concentrations in sands of valley floors or at hill bases.
Iron ore, manganese.
Copper, bauxite.
Magnetite and hematite.
It is ductile and conducts electricity well.
The principal ore from which alumina and aluminium are obtained.
Its insulating and voltage-resistant properties make it useful electrically.
Cement manufacture.
Their formation is extremely slow compared with consumption.
Coal, petroleum.
Solar, wind.
Highest-quality hard coal.
Compressed Natural Gas.
Piped Natural Gas.
Electricity generated using flowing water.
Energy obtained from Earth’s internal heat.

Minerals and Energy Resources — Advanced Question Set (Set 2)

Part A — Higher Level MCQs

1. A mineral found in a rock is not always mined commercially because:
A. minerals have no economic value
B. extraction may not be profitable due to cost and concentration factors
C. minerals cannot be separated from rocks
D. all minerals are found below the ocean

Answer: B

2. A geologist mainly studies minerals to understand their:
A. market price only
B. formation, age and chemical composition
C. transport facilities
D. industrial demand only

Answer: B

3. Which condition is most suitable for the formation of veins and lodes?
A. Deposition in horizontal layers
B. Cooling of molten or gaseous mineral material in cracks
C. Evaporation of seawater only
D. Accumulation of organic remains

Answer: B

4. Coal and gypsum occurring in sedimentary rocks show that minerals can form through:
A. volcanic activity only
B. deposition and accumulation processes
C. magnetic attraction
D. melting of metals

Answer: B

5. Which statement correctly explains uneven mineral distribution in India?
A. All regions have identical geological conditions.
B. Minerals are distributed according to population density.
C. Geological structure and formation processes influence mineral location.
D. Minerals are equally spread across all states.

Answer: C

6. Which iron ore is preferred in electrical industries because of its magnetic qualities?
A. Hematite
B. Magnetite
C. Lignite
D. Bauxite

Answer: B

7. The best physical properties of Bailadila iron ore make it especially useful for:
A. cement production
B. steel manufacturing
C. petroleum refining
D. electrical insulation

Answer: B

8. Which mineral is correctly associated with alloy production?
A. Manganese — ferro-manganese alloy
B. Mica — aluminium alloy
C. Limestone — copper alloy
D. Bauxite — steel alloy

Answer: A

9. Aluminium is preferred for many industries because it is:
A. heavy and non-conductive
B. light, strong and easily shaped
C. magnetic and brittle
D. rare and expensive

Answer: B

10. The main reason mica is valuable for electrical industries is its:
A. fuel value
B. insulating property
C. iron content
D. hardness

Answer: B

11. Mining can damage the environment mainly because it:
A. increases forest growth
B. improves river quality
C. creates waste and pollution
D. reduces industrial activity

Answer: C

12. Recycling metals helps conservation because it:
A. increases mineral formation speed
B. reduces pressure on fresh mineral extraction
C. eliminates all mining
D. creates new minerals

Answer: B

13. Which source belongs to the category of non-conventional energy?
A. Coal
B. Petroleum
C. Wind energy
D. Natural gas

Answer: C

14. Coal quality mainly depends upon:
A. colour only
B. degree of compression and burial conditions
C. location near cities
D. transportation method

Answer: B

15. Metallurgical coal is important because it is used for:
A. cooking food
B. smelting iron in blast furnaces
C. making solar panels
D. producing cement only

Answer: B

16. Petroleum is called a nodal industry resource because refineries support:
A. only transport
B. several chemical and manufacturing industries
C. agriculture only
D. mining only

Answer: B

17. Natural gas is considered cleaner than many fossil fuels because it:
A. is renewable
B. has several efficient uses and reduces dependence on other fuels
C. does not require pipelines
D. is found everywhere

Answer: B

18. Per capita electricity consumption is considered an indicator of:
A. rainfall
B. development level
C. mineral quantity
D. population size only

Answer: B

19. Solar energy has strong potential in India mainly because India:
A. receives abundant sunlight
B. has no fossil fuels
C. has no industries
D. has no rural areas

Answer: A

20. The most suitable energy source for using animal waste in villages is:
A. nuclear energy
B. biogas
C. tidal energy
D. petroleum

Answer: B

Part B — Fill in the Blanks

21. Minerals are found embedded in __________ of the Earth’s crust.

Answer: rocks

22. The physical and chemical conditions during formation influence the properties of a __________.

Answer: mineral

23. The study of minerals as part of Earth’s crust helps geographers understand __________.

Answer: landforms

24. Mineral resources are considered __________ because their formation takes millions of years.

Answer: non-renewable

25. The finest iron ore with excellent magnetic qualities is __________.

Answer: magnetite

26. Hematite is the most important iron ore in terms of __________ used.

Answer: quantity

27. Manganese is essential in the production of __________.

Answer: steel

28. Aluminium is extracted from the ore called __________.

Answer: bauxite

29. The main raw material of cement is __________.

Answer: limestone

30. Coal, petroleum and natural gas are examples of __________ sources of energy.

Answer: conventional

31. The lowest-grade brown coal is called __________.

Answer: lignite

32. The oldest oil-producing state of India mentioned in the chapter is __________.

Answer: Assam

33. Gas used in vehicles is commonly known as __________.

Answer: CNG

34. Gas supplied through pipelines to homes is called __________.

Answer: PNG

35. The process of producing electricity from Earth’s internal heat is called __________ energy.

Answer: geothermal

Part C — One Word / One Term Questions

36. Name the ore from which aluminium is obtained.
Answer: Bauxite

37. Name the hardest variety of coal.
Answer: Anthracite

38. Name the iron ore with the highest iron content.
Answer: Magnetite

39. Name the fuel formed from compressed plant material.
Answer: Coal

40. Name the technology that converts sunlight into electricity.
Answer: Photovoltaic technology

41. Name the energy obtained from ocean tides.
Answer: Tidal energy

42. Name the mineral used as an electrical insulator.
Answer: Mica

43. Name the offshore petroleum field mentioned in the chapter.
Answer: Mumbai High

44. Name the coalfield located in Jharkhand.
Answer: Jharia

45. Name the geothermal site in Himachal Pradesh.
Answer: Manikaran

Part D — Reason-Based Questions

46. Why are minerals called valuable but short-lived possessions?

Answer:
Minerals are valuable because industries depend on them, but they are short-lived because they form extremely slowly and are consumed much faster.

47. Why are industries using coal often located near coal-producing areas?

Answer:
Coal is bulky and loses weight after burning. Transporting it over long distances increases costs, so industries are often located near coalfields.

48. Why is aluminium considered an important metal?

Answer:
Aluminium combines strength with lightness, good conductivity and malleability, making it useful in many industries.

49. Why is renewable energy important for India?

Answer:
Renewable energy reduces dependence on limited fossil fuels and helps control environmental problems.

50. Why should mining activities be carefully regulated?

Answer:
Mining can create health risks for workers and cause land, water and air pollution if not properly managed.

Part E — Competency-Based Questions

Case Study 1

A company discovers a mineral deposit in a remote area. The ore quantity is large, but transportation facilities are poor and extraction costs are high.

51. What factors will decide whether mining starts?

Answer:
Ore concentration, extraction cost, transportation facilities and distance from markets will influence the decision.

52. Why may a large mineral deposit still remain unused?

Answer:
Because extraction may not be economically profitable.

Case Study 2

A village replaces firewood with solar panels and biogas plants.

53. Which two renewable sources are being used?

Answer:
Solar energy and biogas.

54. Mention one environmental advantage of this change.

Answer:
It reduces pressure on forests and decreases pollution.

Case Study 3

A factory uses recycled metal instead of extracting new minerals.

55. Which conservation principle does this represent?

Answer:
Recycling and sustainable use of mineral resources.

Part F — Important Diagram/Flow Questions

56. Complete the chain:

Mineral → Ore → __________ → Industrial use

Answer: Extraction/processing

57. Complete the energy classification:

Energy Resources
→ Conventional
→ __________

Answer: Non-conventional

58. Complete the coal sequence according to increasing quality:

Peat → Lignite → Bituminous → __________

Answer: Anthracite

59. Complete:

Sunlight → Photovoltaic technology → __________

Answer: Electricity

60. Complete:

Organic waste → Decomposition → __________

Answer: Biogas

Minerals and Energy Resources — Advanced Question Set (Set 3)

Part A — Tricky MCQs

1. A mineral becomes an economically useful resource only when:

A. It is found on the surface
B. It has high concentration and extraction is profitable
C. It belongs to metallic category
D. It is found in large rocks

Answer: B

2. Which pair represents minerals found mainly in sedimentary formations?

A. Coal and gypsum
B. Copper and zinc
C. Tin and lead
D. Gold and platinum

Answer: A

3. The formation of bauxite is mainly related to:

A. Cooling of molten material
B. Evaporation of seawater
C. Weathering and removal of soluble materials
D. Deposition of river sand

Answer: C

4. A student finds a mineral deposit in a river valley containing gold particles. This deposit is most likely:

A. Vein deposit
B. Lode deposit
C. Placer deposit
D. Bed deposit

Answer: C

5. Which statement about India’s mineral distribution is correct?

A. Minerals are evenly distributed throughout India.
B. Mineral distribution depends on geological conditions.
C. Only coastal regions contain minerals.
D. Minerals occur only in young rocks.

Answer: B

6. Which combination is correctly matched?

A. Magnetite — high magnetic quality
B. Mica — cement production
C. Limestone — electrical insulation
D. Bauxite — fossil fuel

Answer: A

7. The main reason hematite is more widely used than magnetite is:

A. It is a non-metallic mineral
B. It occurs in larger quantities for industrial use
C. It contains no iron
D. It is found only underground

Answer: B

8. Which mineral plays a double role in industry by being useful both in steel production and other products like paints?

A. Manganese
B. Copper
C. Limestone
D. Mica

Answer: A

9. A metal used in aircraft, electrical equipment and construction is likely:

A. Aluminium
B. Coal
C. Limestone
D. Manganese

Answer: A

10. Which mineral is important because it can be split into very thin sheets?

A. Bauxite
B. Mica
C. Copper
D. Iron ore

Answer: B

11. Which activity directly helps in conserving minerals?

A. Increasing extraction speed
B. Using more raw ores
C. Recycling metals
D. Mining deeper areas only

Answer: C

12. The main environmental problem caused by dumping mining waste is:

A. Increase in soil fertility
B. Pollution of land and water
C. Formation of new minerals
D. Reduction of industrial activity

Answer: B

13. Which coal type has the highest carbon content among those discussed?

A. Peat
B. Lignite
C. Anthracite
D. Brown coal

Answer: C

14. Coal found in Gondwana deposits is mainly associated with:

A. Very recent formations
B. Ancient geological periods
C. Ocean water deposits
D. Volcanic lava flows

Answer: B

15. Petroleum accumulation generally requires:

A. Porous rocks covered by non-porous layers
B. Open cracks reaching the surface
C. Only granite rocks
D. River deposits

Answer: A

16. Natural gas is often found:

A. Below coal seams only
B. Above petroleum because it is lighter
C. Only in mountain regions
D. In mica deposits

Answer: B

17. Which energy source converts moving water into electricity?

A. Thermal energy
B. Hydroelectric energy
C. Solar energy
D. Nuclear energy

Answer: B

18. The main disadvantage of excessive fossil fuel use is:

A. No energy production
B. Environmental problems and resource limitations
C. Complete absence of industries
D. Formation of fewer minerals

Answer: B

19. A village with cattle waste and agricultural waste should preferably adopt:

A. Biogas plants
B. Nuclear plants
C. Thermal plants
D. Petroleum refining

Answer: A

20. Which energy source uses heat from inside the Earth?

A. Solar
B. Geothermal
C. Wind
D. Tidal

Answer: B

Part B — Assertion and Reason

Choose:

A. Both A and R are true and R explains A
B. Both A and R are true but R does not explain A
C. A is true but R is false
D. A is false but R is true

21.

Assertion: Mineral resources should be used carefully.
Reason: Minerals are limited resources and take millions of years to form.

Answer: A

22.

Assertion: Coal-based industries are often located near coalfields.
Reason: Coal is bulky and loses weight after burning.

Answer: A

23.

Assertion: Aluminium is widely used in industries.
Reason: Aluminium is light, strong and has good conductivity.

Answer: A

24.

Assertion: Renewable energy sources are gaining importance.
Reason: Fossil fuels are unlimited resources.

Answer: C

25.

Assertion: Mica is important for electrical industries.
Reason: It has excellent insulating properties.

Answer: A

Part C — Correct the Statement

26. Correct the statement:

“All minerals are found in the same type of rock formation.”

Answer:
Minerals occur in different geological formations such as igneous, metamorphic and sedimentary rocks.

27. Correct the statement:

“Lignite is the highest-quality coal.”

Answer:
Anthracite is the highest-quality hard coal, while lignite is a low-grade brown coal.

28. Correct the statement:

“Petroleum is used only as a fuel.”

Answer:
Petroleum is used as fuel, lubricants and as a raw material for many industries.

29. Correct the statement:

“Hydroelectricity depends on fossil fuels.”

Answer:
Hydroelectricity depends on flowing water, a renewable resource.

30. Correct the statement:

“Mineral conservation is unnecessary because minerals are renewed quickly.”

Answer:
Minerals are non-renewable because they form over very long geological periods.

Part D — Situation-Based Questions

Situation 1

A steel plant wants to reduce transportation costs and chooses a location close to coal and iron ore sources.

31. Why would this location be beneficial?

Answer:
Coal and iron ore are bulky raw materials. Locating near sources reduces transportation costs.

32. Which two minerals are most important for this industry?

Answer:
Coal and iron ore.

Situation 2

A government encourages households to use solar panels and energy-efficient appliances.

33. Which energy concept does this support?

Answer:
Energy conservation and renewable energy use.

34. Why is solar energy suitable for India?

Answer:
India receives abundant sunlight due to its tropical location.

Situation 3

Mining activity in a region has caused polluted streams and damaged land.

35. Identify two environmental impacts.

Answer:

Water pollution
Land and soil degradation

36. Suggest two solutions.

Answer:

Follow environmental regulations
Proper waste management and safer mining practices

Part E — Match the Following (Advanced)

37.

Mineral/Resource	Feature
Magnetite	A. Aluminium ore
Bauxite	B. Highest iron content
Mica	C. Electrical insulation
Limestone	D. Cement industry

Answer:
Magnetite — B
Bauxite — A
Mica — C
Limestone — D

38.

Energy Source	Main Feature
Solar	A. Organic waste
Wind	B. Sunlight
Biogas	C. Moving air
Geothermal	D. Earth’s heat

Answer:
Solar — B
Wind — C
Biogas — A
Geothermal — D

Part F — Map-Based Questions

39. Identify the state/region associated with Bailadila iron ore mines.

Answer: Chhattisgarh

40. Identify the state associated with Kudremukh iron ore mines.

Answer: Karnataka

41. Identify the state famous for Panchpatmali bauxite deposits.

Answer: Odisha

42. Identify the state associated with Koderma mica belt.

Answer: Jharkhand

43. Identify the offshore petroleum field near Mumbai.

Answer: Mumbai High

44. Identify the state where Digboi oilfield is located.

Answer: Assam

45. Identify the geothermal location in Ladakh.

Answer: Puga Valley

Part G — HOTS Questions

46. Why can a country rich in minerals still face resource problems?

Answer:
Because minerals may be unevenly distributed, difficult to extract, expensive to mine or limited in quantity.

47. Why is recycling considered an important mineral conservation method?

Answer:
Recycling reduces the need for fresh extraction and extends the life of existing mineral resources.

48. Why should India increase renewable energy use despite having coal reserves?

Answer:
Coal is limited and causes environmental problems. Renewable sources provide cleaner and sustainable alternatives.

49. Explain why energy conservation is as important as energy production.

Answer:
Saving energy reduces resource consumption, lowers environmental impact and ensures availability for future needs.

50. How are mineral resources linked with industrial development?

Answer:
Minerals provide raw materials for industries such as steel, cement, electrical equipment and manufacturing, forming the base of economic development.

Minerals and Energy Resources — Advanced Question Set (Set 4)

Part A — Source-Based Questions

Source 1

Minerals are essential for human life and industrial development. Almost everything from small household items to large machines and buildings uses minerals. However, minerals are limited resources because their formation takes extremely long periods.

Questions:

1. Why are minerals considered important for human development?

Answer:
Minerals provide raw materials for industries, construction, transport, machinery and many everyday products.

2. Why are minerals called finite resources?

Answer:
Because they take millions of years to form but are consumed much faster by humans.

3. Give two examples of things made using minerals.

Answer:
Buildings and machines.

Source 2

Minerals may occur in cracks, faults and joints of igneous and metamorphic rocks. Smaller deposits are called veins, while larger deposits are called lodes. Metallic minerals such as tin, copper, zinc and lead are obtained from these formations.

Questions:

4. What are veins?

Answer:
Veins are small mineral deposits occurring in cracks and joints of rocks.

5. What are lodes?

Answer:
Lodes are larger mineral deposits found in cracks and faults of rocks.

6. Name two minerals obtained from veins and lodes.

Answer:
Copper and zinc.

Part B — Competency-Based Questions

7. A mining company finds a mineral deposit but decides not to start mining because extraction costs are very high.

(a) Why might the company take this decision?

Answer:
Mining becomes profitable only when the mineral concentration, extraction cost and market conditions make it economically viable.

(b) Does the presence of minerals always mean mining will occur?

Answer:
No. Economic factors determine whether a deposit becomes a working mine.

8. A student says, “All minerals found underground are useful resources.”

Do you agree? Explain.

Answer:
No. A mineral becomes a useful resource only when it can be extracted and used economically.

9. A region has large deposits of minerals but poor transport facilities.

How can this affect mineral-based industries?

Answer:
Poor transport increases costs and may reduce the economic value of the mineral deposits.

Part C — 3 Mark Questions

10. Explain the difference between ferrous and non-ferrous minerals.

Answer:

Ferrous Minerals	Non-Ferrous Minerals
Contain iron	Do not mainly contain iron
Important for metallurgical industries	Important for electrical, engineering and other industries
Examples: iron ore, manganese	Examples: copper, bauxite

11. Describe the importance of iron ore.

Answer:

Iron ore is the basic mineral for industrial development.
It provides raw material for steel production.
Steel supports transport, machinery and construction industries.

12. Explain three uses of manganese.

Answer:
Manganese is used in:

Steel manufacturing.
Production of ferro-manganese alloy.
Manufacturing bleaching powder, insecticides and paints.

13. Why is copper considered an important mineral?

Answer:
Copper is:

Malleable and ductile.
A good conductor of electricity.
Used in electrical cables, electronics and chemical industries.

14. Explain why bauxite is an important mineral.

Answer:
Bauxite is important because:

It is the main ore of aluminium.
Aluminium is lightweight but strong.
It has good conductivity and high malleability.

Part D — 5 Mark Questions

15. Explain the different modes of occurrence of minerals.

Answer:

Minerals occur in several ways:

Veins and lodes:
Found in cracks and faults of igneous and metamorphic rocks. Small deposits are veins and larger deposits are lodes.
Beds and layers:
Found in sedimentary rocks due to deposition and accumulation.
Residual deposits:
Form when weathering removes soluble materials and leaves mineral-rich residue.
Placer deposits:
Minerals accumulate in river sands and valley floors.
Ocean deposits:
Some minerals are obtained from seawater and ocean beds.

16. Explain the major causes of environmental problems due to mining.

Answer:

Mining affects the environment in several ways:

Dust and harmful gases affect miners’ health.
Mine accidents can occur due to roof collapse, flooding and fires.
Mining waste damages land quality.
Dumping waste contaminates rivers and groundwater.
Proper safety rules and environmental protection measures are needed.

17. Explain the need and methods of mineral conservation.

Answer:

Mineral conservation is necessary because minerals:

Are non-renewable.
Take millions of years to form.
Are being consumed rapidly.

Methods of conservation:

Use minerals carefully.
Develop technology to use low-grade ores.
Recycle metals.
Use substitutes wherever possible.
Follow sustainable mining practices.

Part E — Energy Resource Questions

18. Differentiate between conventional and non-conventional sources of energy.

Answer:

Conventional Sources	Non-Conventional Sources
Traditionally used sources	Modern renewable alternatives
Include coal, petroleum, natural gas	Include solar, wind, tidal, geothermal
Mostly limited resources	Mostly renewable resources

19. Explain the different types of coal.

Answer:

Peat:

Lowest grade coal.
High moisture and low heating capacity.

Lignite:

Soft brown coal.
Contains high moisture.

Bituminous:

Most widely used commercial coal.

Metallurgical coal:

High-grade coal used in iron smelting.

Anthracite:

Highest-quality hard coal.

20. Explain the importance of petroleum and natural gas.

Answer:

Petroleum:

Provides fuel for transport.
Used as lubricants.
Provides raw materials for chemical industries.

Natural Gas:

Used for electricity generation.
Used in industries and fertiliser production.
Used as CNG and PNG.

Part F — HOTS Questions

21. Why should a country not depend only on fossil fuels?

Answer:
Because fossil fuels:

Are limited.
Create environmental problems.
May create energy-security issues due to shortages.

22. Why is solar energy considered suitable for rural India?

Answer:
Solar energy can be used in remote areas where conventional electricity supply may be difficult. It also reduces dependence on firewood and other traditional fuels.

23. Explain why biogas is considered a useful rural energy source.

Answer:
Biogas:

Uses animal and agricultural waste.
Provides fuel for households.
Produces improved-quality manure.
Reduces dependence on firewood.

24. Why is energy conservation necessary even when renewable sources are available?

Answer:
Renewable energy development takes time and resources. Efficient use of energy reduces waste and ensures availability for future needs.

Part G — Map-Based Competency Questions

25. A steel industry wants raw materials from nearby mineral belts.

Which mineral regions would be useful?

Answer:
Iron ore and coal-producing regions such as:

Odisha–Jharkhand belt
Chhattisgarh region
Karnataka belt

26. A company wants to establish a wind energy project.

Name suitable regions mentioned in the chapter.

Answer:
Tamil Nadu, Gujarat, Karnataka, Maharashtra and Kerala.

27. A scientist wants to study geothermal energy projects mentioned in India.

Which locations should be studied?

Answer:

Manikaran in Himachal Pradesh
Puga Valley in Ladakh

Part H — Case-Based Long Answers

28. A country has abundant mineral resources but wants future generations to benefit from them.

Suggest a resource management plan.

Answer:

A sustainable mineral management plan should include:

Controlled extraction.
Recycling of metals.
Use of improved technology.
Reduction of wastage.
Development of substitutes.
Environmental protection during mining.

29. India wants to reduce pollution while meeting rising energy demand.

Suggest an energy strategy.

Answer:

India should:

Increase renewable energy use.
Improve energy efficiency.
Promote solar and wind power.
Reduce unnecessary fossil fuel consumption.
Encourage conservation practices.

30. Explain the relationship between minerals, industries and economic development.

Answer:

Minerals provide essential raw materials for industries. Industries such as steel, cement, electrical equipment and manufacturing depend on minerals. Therefore, availability and proper management of minerals support economic development.