An atoll is: MCQ with Answer and Explanation

An atoll is:
A. A Volcanic Mountain
B. A Ring-shaped Coral Island
C. A River Delta
D. A Crescent-shaped Sand Dune
Answer: Option B
Solution (By JKExamLibrary)
An atoll is a ring-shaped coral reef, island, or series of islets surrounding a lagoon.

This question belongs to: Geography GK Physical Geography

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Practice More Physical Geography Questions

Question #1 Report Error
The Lehmann Discontinuity separates which two layers of the Earth?
A. Outer Core and Inner Core
B. Mantle and Outer Core
C. Upper Mantle and Lower Mantle
D. Crust and Mantle

Correct Answer: Option A


Explanation:
The Lehmann Discontinuity marks the boundary between the liquid outer core and the solid inner core. It was discovered by Danish seismologist Inge Lehmann in 1936.

This question belongs to: Geography GK Physical Geography
Question #2 Report Error
The deepest point on Earth is found in:
A. Puerto Rico Trench
B. Mariana Trench
C. Java Trench
D. Peru-Chile Trench

Correct Answer: Option B


Explanation:
The Challenger Deep in the Mariana Trench is the deepest known point on Earth.

This question belongs to: Geography GK Physical Geography
Question #3 Report Error
Which type of plate boundary is most likely to produce andesitic magma?
A. Divergent boundary
B. Transform boundary
C. Oceanic-continental convergence
D. Continental rift

Correct Answer: Option C


Explanation:
Andesitic magma commonly forms at oceanic-continental convergent boundaries due to subduction.

This question belongs to: Geography GK Physical Geography