The most abundant element in the Earth's crust is: MCQ with Answer and Explanation

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The most abundant element in the Earth's crust is:

A. Oxygen

B. Aluminium

C. Silicon

D. Iron

Answer: Option A

Solution (By JKSSB Mock Tests)

Oxygen is the most abundant element in the Earth's crust, constituting about 46.6% by weight. Silicon is the second most abundant.

This question belongs to: Geography GK Physical Geography

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The world's largest active volcano by volume is:

A. Mount Etna

B. Mount Fuji

C. Mauna Loa

D. Krakatoa

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Correct Answer: Option C

Explanation:
Mauna Loa in Hawaii is one of the largest active volcanoes on Earth.

This question belongs to: Geography GK Physical Geography

Question #2

The largest coral atoll in the world is:

A. Lakshadweep

B. Maldives

C. Kwajalein Atoll

D. Bikini Atoll

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Correct Answer: Option C

Explanation:
Kwajalein Atoll in the Marshall Islands is the world's largest coral atoll by lagoon area.

This question belongs to: Geography GK Physical Geography

Question #3

Basalt is commonly associated with:

A. Oceanic Crust

B. Sedimentary Basins

C. Continental Crust

D. Metamorphic Belts

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Correct Answer: Option A

Explanation:
Basalt is the dominant rock type of the oceanic crust and forms from rapidly cooling lava.

This question belongs to: Geography GK Physical Geography

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