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

Which mineral is the hardest on the Mohs scale?
A. Corundum
B. Topaz
C. Quartz
D. Diamond
Answer: Option D
Solution (By JKExamLibrary)
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 Report Error
The largest bay in the Atlantic Ocean is:
A. Bay of Biscay
B. Hudson Bay
C. Baffin Bay
D. Gulf of Guinea

Correct Answer: Option B


Explanation:
Hudson Bay in northeastern Canada is one of the largest bays connected to the Atlantic system.

This question belongs to: Geography GK Physical Geography
Question #2 Report Error
Which cloud type appears as thin, feathery streaks?
A. Nimbus
B. Stratus
C. Cumulus
D. Cirrus

Correct Answer: Option D


Explanation:
Cirrus clouds are high-altitude clouds that appear as thin white streaks.

This question belongs to: Geography GK Physical Geography
Question #3 Report Error
The largest carbon sink among Earth's spheres is:
A. Oceans
B. Grasslands
C. Forests
D. Atmosphere

Correct Answer: Option A


Explanation:
Oceans absorb and store vast amounts of carbon dioxide, making them the largest active carbon sink.

This question belongs to: Geography GK Physical Geography