The Earth's crust is richest in which element by weight? MCQ with Answer and Explanation

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The Earth's crust is richest in which element by weight?

A. Silicon

B. Oxygen

C. Iron

D. Aluminium

Answer: Option B

Solution (By JKSSB Mock Tests)

Oxygen constitutes about 46.6% of the Earth's crust by weight, making it the most abundant element.

This question belongs to: Geography GK Physical Geography

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Practice More Physical Geography Questions

Question #1

The Gutenberg Discontinuity separates which two layers of the Earth?

A. Mantle and Outer Core

B. Upper Mantle and Lower Mantle

C. Crust and Mantle

D. Outer Core and Inner Core

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Correct Answer: Option A

Explanation:
The Gutenberg Discontinuity marks the boundary between the mantle and the outer core at a depth of about 2900 km.

This question belongs to: Geography GK Physical Geography

Question #2

The largest island in the world is:

A. Australia

B. Greenland

C. Madagascar

D. Borneo

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Correct Answer: Option B

Explanation:
Greenland is the world's largest island. Australia is considered a continent.

This question belongs to: Geography GK Physical Geography

Question #3

The Earth is closest to the Sun on:

A. Solstice

B. Aphelion

C. Perihelion

D. Equinox

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Correct Answer: Option C

Explanation:
Perihelion occurs around January 3 when Earth is closest to the Sun.

This question belongs to: Geography GK Physical Geography

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