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1. Minerals are defined as:
A. Naturally occurring substances with random structure
B. Homogenous, naturally occurring substances with definable internal structure
C. Man-made mixtures with uniform composition
D. Artificial substances created by geological processes
2. Which is the hardest mineral?
A. Talc
B. Quartz
C. Diamond
D. Feldspar
3. Which mineral is the softest?
A. Gypsum
B. Talc
C. Mica
D. Fluorite
4. Which property is NOT used to classify minerals?
A. Colour
B. Density
C. Elasticity
D. Lustre
5. Rocks are:
A. Mixtures of metals and gases
B. Combinations of minerals
C. Artificially compressed soil
D. Fossilized plants only
6. A rock consisting of a single mineral is:
A. Quartzite
B. Granite
C. Limestone
D. Basalt
7. Minerals occurring in cracks and joints of igneous and metamorphic rocks are called:
A. Beds
B. Layers
C. Veins and lodes
D. Strata
8. Tin, copper, zinc, and lead are obtained from:
A. Sedimentary layers
B. Veins and lodes
C. Alluvial deposits
D. Ocean water
9. Which minerals occur in beds or layers of sedimentary rocks?
A. Bauxite and mica
B. Tin and platinum
C. Gypsum, potash salt, sodium salt
D. Diamond and copper
10. Which mineral is formed by surface decomposition leaving residual masses?
A. Bauxite
B. Iron ore
C. Mica
D. Zinc
11. Minerals occurring in sands of valley floors and base of hills are called:
A. Residual deposits
B. Placer deposits
C. Vein deposits
D. Layered deposits
12. Which mineral is NOT usually found in placer deposits?
A. Gold
B. Platinum
C. Silver
D. Coal
13. Which minerals are largely derived from ocean waters?
A. Gold and platinum
B. Common salt, magnesium, bromine
C. Bauxite and copper
D. Tin and zinc
14. What do manganese nodules found in ocean beds contain?
A. Manganese
B. Aluminium
C. Zinc
D. Silver
15. Ferrous minerals account for what proportion of the total value of metallic minerals production in India?
A. Half
B. One-fourth
C. Three-fourths
D. One-tenth
16. Magnetite iron ore contains iron up to:
A. 50%
B. 60%
C. 70%
D. 80%
17. Hematite iron ore contains iron in the range of:
A. 20–30%
B. 30–40%
C. 50–60%
D. 60–70%
18. In 2018–19, Odisha, Chhattisgarh, Karnataka and Jharkhand together produced what percentage of India’s iron ore?
A. 100%
B. 97%
C. 85%
D. 60%
19. Kudremukh mines in Karnataka are famous because:
A. They are the largest coal mines
B. They are a 100% export unit of iron ore
C. They are the only zinc mines in India
D. They produce petroleum
20. Bailadila hills in Chhattisgarh are famous for:
A. Gold deposits
B. High grade hematite iron ore
C. Copper reserves
D. Coal mining
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