Obsidian is a type of: MCQ with Answer and Explanation

Obsidian is a type of:

A. Sedimentary Rock

B. Volcanic Glass

C. Metamorphic Rock

D. Organic Rock

Answer: Option B

Obsidian forms when lava cools very rapidly, preventing crystal formation and creating natural volcanic glass.

This question belongs to: Geography GK Physical Geography

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Question #1 Report Error

Which sphere of the Earth includes all water bodies?

A. Biosphere

B. Hydrosphere

C. Lithosphere

D. Atmosphere

Correct Answer: Option B

Explanation:
The hydrosphere includes all water on Earth, including oceans, rivers, lakes, glaciers, groundwater, and atmospheric moisture.

This question belongs to: Geography GK Physical Geography

Question #2 Report Error

The largest sand desert in the world is:

A. Arabian

B. Gobi

C. Sahara

D. Thar

Correct Answer: Option C

Explanation:
The Sahara is the largest hot sand desert in the world, covering much of North Africa.

This question belongs to: Geography GK Physical Geography

Question #3 Report Error

The Dead Sea is famous for its:

A. Freshwater Supply

B. High Salinity

C. Great Depth

D. Coral Reefs

Correct Answer: Option B

Explanation:
The Dead Sea has extremely high salinity, making it easy for people to float.

This question belongs to: Geography GK Physical Geography