Rocks and Their Types NDA Questions

NDA Physical Geography

Rocks and Their Types MCQ Questions


1.
What is a rock?
A.
Minerals that contain metallic elements
B.
Only materials formed from magma inside the Earth
C.
Only hard crystalline solids found underground
D.
Any natural solid material forming the Earth's crust, hard like granite or soft like clay
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ANSWER :
D. Any natural solid material forming the Earth's crust, hard like granite or soft like clay
2.
The science that studies rocks is called:
A.
Petrology
B.
Lithology
C.
Mineralogy
D.
Geology
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ANSWER :
A. Petrology
3.
Which is the most common mineral found in rocks?
A.
Feldspar
B.
Mica
C.
Quartz
D.
Calcite
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ANSWER :
A. Feldspar
4.
Rocks are broadly classified into how many major types?
A.
Two (Igneous and Sedimentary)
B.
Three (Igneous, Sedimentary, Metamorphic)
C.
Five based on hardness
D.
Four (Igneous, Sedimentary, Metamorphic, Volcanic)
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ANSWER :
B. Three (Igneous, Sedimentary, Metamorphic)
5.
A mineral is defined as:
A.
A naturally occurring inorganic substance with a definite chemical composition and orderly atomic structure
B.
Any metallic element extracted from the Earth
C.
Any hard material found in the Earth's crust
D.
A compound formed by volcanic activity only
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ANSWER :
A. A naturally occurring inorganic substance with a definite chemical composition and orderly atomic structure
6.
Which of the following is NOT a physical property used to identify minerals?
A.
Age
B.
Lustre
C.
Cleavage
D.
Hardness
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ANSWER :
A. Age