Solved UPSC CDS/OTA Question
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Q · Volcanomedium · 45s
What is a caldera?
TopicVolcano
Question Typemultiple choice
Difficultymedium
Marking+1 / −0.33
Test Duration30 min
Step-by-Step Solution
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A caldera is a large, basin-like volcanic crater formed when a volcano erupts and its magma chamber empties, causing the ground above to collapse. Calderas can be several kilometers in diameter and may fill with water to form lakes.
Final Answer: Option A - A volcanic crater formed by collapse