The Earth's inner core is believed to be solid mainly because of: MCQ with Answer and Explanation

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The Earth's inner core is believed to be solid mainly because of:

A. Low temperature

B. Absence of iron

C. High pressure

D. Low pressure

Answer: Option C

Solution (By JKSSB Mock Tests)

Despite extremely high temperatures, the immense pressure in the inner core keeps it in a solid state.

This question belongs to: Geography GK Physical Geography

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The largest canyon in the world is:

A. Colca Canyon

B. Grand Canyon

C. Fish River Canyon

D. Yarlung Tsangpo Grand Canyon

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Correct Answer: Option D

Explanation:
The Yarlung Tsangpo Grand Canyon in Tibet is considered the deepest and one of the largest canyons in the world.

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Question #2

Which boundary is associated with the creation of new oceanic crust?

A. Convergent Boundary

B. Collision Boundary

C. Transform Boundary

D. Divergent Boundary

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Correct Answer: Option D

Explanation:
At divergent boundaries, tectonic plates move apart and magma rises to create new oceanic crust.

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Question #3

Which seismic discontinuity marks the boundary where P-wave velocity suddenly decreases before increasing again due to partial melting?

A. Lehmann Discontinuity

B. Low Velocity Zone

C. Conrad Discontinuity

D. Gutenberg Discontinuity

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Correct Answer: Option B

Explanation:
The Low Velocity Zone (LVZ) occurs in the upper asthenosphere where partially molten materials reduce seismic wave velocity.

This question belongs to: Geography GK Physical Geography

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