Social Science Geography CBSE Class 10 Minerals and Energy Resources
MCQs
Q1: Limestone is associated with
(a) Sedimentary rock
(b) Igneous rock
(c) Metamorphic rock
(d) Tertiary rock
Q2(NCERT): Which one of the following minerals is formed by decomposition of rocks, leaving a residual mass of weathered material?
(a) coal
(b) bauxite
(c) gold
(d) zinc
Q3(CBSE): Which is correct about Magnetite iron core?
(a) Magnetite is the most important industrial iron ore in terms of quantity used.
(b) Magnetite has the inferior magnetic qualities which is not valuable in the electric industry.
(c) It is the finest iron ore with very high content of iron upto 70%.
(d) It has a slightly lower iron content than hematite (50-60%)
Q4: They study minerals as part of earth's crust for a better understanding of landforms. They are called:
(a) Scientists
(b) Geographers
(c) Geologists
(d) Ecologists
Q5(NCERT): Koderma, in Jharkhand is the leading producer of which one of the following minerals?
(a) bauxite
(b) mica
(c) iron ore
(d) copper
Q6(CBSE): Which one of the following is an essential feature of Mica?
(a) It is a metallic mineral made up of a series of plates
(b) It is not used in electric and electronic industry.
(c) It cannot be easily split into thin sheets
(b) It is not used in electric and electronic industry.
(c) It cannot be easily split into thin sheets
(d) It can be clear, black, green, red, yellow or brown.
Q7: Small occurrences of minerals in rocks are known as:
(a) Lodes
(b) Veins
(c) Orcs
(d) Crevices
Q8(NCERT): Which of the following minerals is contained in the Monazite sand?
(a) Oil
(b) Uranium
(c) Thorium
(d) Coal
Q9(CBSE): Which mineral belongs to the category of non-ferrous metals?
(a) Iron core
(b) Manganese
(c) Cobalt
(d) Copper
Q10: Khetri mines are famous for
(a) coal
(b) gold
(c) copper
(d) iron
Q11(CBSE): Which one of the following minerals is NOT obtained from the veins and lodes?
(a) Tin
(b) Zinc
(c) Lead
(d) Gypsum
Q12(CBSE): The larger occurrences of minerals of igneous and metamorphic rocks are called:
(a) Veins
(b) Lodes
(c) Beds
(d) Layers
Q13(NCERT): Minerals are deposited and accumulated in the stratas of which of the following rocks?
(a) sedimentary rocks
(b) metamorphic rocks
(c) igneous rocks
(d) none of the above
Q14: Rat-hole mining is found in
(a) Jharkhand
(b) Orissa
(c) Madhya Pradesh
(d) Meghalaya
Q15(CBSE): Which one of the following minerals is largely derived from Ocean Waters?
(a) Bromine
(b) Silver
(c) Platinum
(d) Bauxite
Answers:
1: (a) Sedimentary rock
2: (b) bauxite
3: (c) It is the finest iron ore with very high content of iron upto 70%.
4: (c) Geologists
5: (b) mica
6: (d) It can be clear, black, green, red, yellow or brown.
7: (b) Veins
8: (c) Thorium
9: (d) Copper10: (c) copper
11: (d) Gypsum
12: (b)Lodes
13: (a) sedimentary rocks
14: (d) Meghalaya
15: (a) Bromine
Q & A
Q16: Define minerals? Give two examples.
Answer: Minerals are naturally occurring homogenous substances with definable internal structure. e.g. coal and iron.
Q 17: Mention the properties used by geologist to classify the minerals.
Answer: Properties used by geologists to classify minerals are:
- colour
- hardness
- lusture
- density
- crystal formation
Answer: Minerals that occur as alluvial fans in sands of valley floors, and the base of hills.
Q2: Define Rat-hole Mining.
Answer: In the tribal areas of North-East India mining is carried out by individuals or communities illegally. The mining is done in the form of a long narrow tunnel known as Rat hole mining.
Q3: Write two uses of Mica and also areas famous for mica deposits.
Answer: Mica is used in electric and electronic industries
Areas found in:
(a) Gaya-Hazaribagh inJharkhand, and
(b)Ajmer and Beawarin Rajasthan
Q4: What are three types of Coal? Write one difference of each type of coal?
Answer:
⑴ Lignite coal-low grade brown coal soft with high moisture content. Found in Nevyel i(T.N)
⑵ Bituminous Coal- It contains 60-80% of carbon content.
⑶ Anthracite- Best quality, contains more than 80% of carbon content.
Q5: What are Geo-thermal Energy? Which are the two experimental projects of geothermal energy in India?
Answer:
⑴ Geo-thermal energy refers to the heat and electricity produced by using the heat from the interior of the earth
Areas where the two experimental projects are done:
⑵ Parvati Valley near Manikarn in Himachal Pradesh
⑶ Puga valley in Ladakh
Q6: Distinguish between Ferrous and Non-ferrous minerals.
Answer: Minerals containing iron are called ferrous minerals, e.g., iron ore, manganese, nickel cobalt. Minerals
which do not contain iron are called non-ferrous minerals, e.g., bauxite, lead and gold.
Q7: Distinguish between Conventional and Non-conventional sources of energy.
Answer: Conventional sources of energy are generally exhaustible and polluting, e.g., rewood, coal and petroleum. Non conventional or renewable sources of energy are usually inexhaustible and non-polluting,
e.g., solar, wind, tidal and atomic energy.
Q8: Why is mining activity often called a “Killer Industry”. Give three reasons.
Answer:
⑴ High risk involved
⑵ Due to poisonous fumes, mines are vulnerable to workers for pulmonary diseases.
⑶ Risk of collapsing mines roofs, and fires in coal mines.
⑷ Water sources get contaminated.
Q9: How are minerals formed in igneous and metamorphic rocks?
Answer: In igneous and metamorphic rocks, molten/liquid and gaseous minerals are forced upwards through cavities towards the earth’s surface. They then cool and solidify as they rise. They are seen in cracks, faults and joints . The smaller occurrences are called veins while the larger are lodes.
Q10: Why does solar energy in Rajasthan have great potential as non –conventional source of energy?
Answer:
⑴ Hot and dry region
⑵ Clear sky almost whole year
⑶ Cheaper installation
⑷ Renewable and pollution free energy source.
⑸ Government motivation
