Rocks and Their Types NDA Questions

NDA Physical Geography

Rocks and Their Types MCQ Questions


7.
The hardest known natural mineral is:
A.
Corundum
B.
Diamond
C.
Quartz
D.
Topaz
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ANSWER :
B. Diamond
8.
Talc is at the bottom of the Mohs Hardness Scale with a hardness of:
A.
0.5
B.
3
C.
1
D.
2
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ANSWER :
C. 1
9.
The Mohs Hardness Scale ranges from:
A.
0 to 100
B.
1 to 12
C.
1 to 10
D.
0 to 5
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ANSWER :
C. 1 to 10
10.
Which mineral group constitutes the largest group and forms the backbone of most rocks?
A.
Oxides
B.
Sulphides
C.
Carbonates
D.
Silicates
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ANSWER :
D. Silicates
11.
Ferrous metallic minerals contain:
A.
Copper, lead, zinc, tin, aluminium
B.
Calcium, sodium and potassium
C.
Iron and metals often mixed with iron to form various kinds of steel
D.
Gold, silver and platinum
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ANSWER :
C. Iron and metals often mixed with iron to form various kinds of steel
12.
Non-ferrous metallic minerals include:
A.
Gold, silver, platinum
B.
Coal and petroleum
C.
Copper, lead, zinc, tin, aluminium
D.
Iron ore and manganese
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ANSWER :
C. Copper, lead, zinc, tin, aluminium