Which mineral is the hardest on the Mohs scale? MCQ with Answer and Explanation

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Which mineral is the hardest on the Mohs scale?

A. Diamond

B. Quartz

C. Corundum

D. Topaz

Answer: Option A

Solution (By JKSSB Mock Tests)

Diamond has a hardness of 10 on the Mohs scale, making it the hardest naturally occurring mineral.

This question belongs to: Geography GK Physical Geography

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Practice More Physical Geography Questions

Question #1

The International Date Line roughly follows:

A. 180° Longitude

B. 90° West

C. 90° East

D. 0° Longitude

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Correct Answer: Option A

Explanation:
The International Date Line roughly follows 180° longitude and is where the calendar date changes by one day.

This question belongs to: Geography GK Physical Geography

Question #2

Approximately what percentage of Earth's surface is covered by water?

A. 81%

B. 61%

C. 51%

D. 71%

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Correct Answer: Option D

Explanation:
About 71% of the Earth's surface is covered by water, while 29% is land.

This question belongs to: Geography GK Physical Geography

Question #3

The Intertropical Convergence Zone (ITCZ) is characterized by:

A. High pressure

B. Cold desert conditions

C. Rising air and convection

D. Descending air

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Correct Answer: Option C

Explanation:
The ITCZ is a low-pressure belt where warm air rises, producing heavy rainfall.

This question belongs to: Geography GK Physical Geography

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