Solved UPSC CDS/OTA Question
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Q · Rocks and Rock Cyclemedium · 45s
What causes sedimentary rocks to harden and become solid?
TopicRocks and Rock Cycle
Question Typemultiple choice
Difficultymedium
Marking+1 / −0.33
Test Duration30 min
Step-by-Step Solution
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Sedimentary rocks harden primarily due to compaction—the squeezing of sediments by the weight of overlying layers—and cementation—minerals precipitating from water to bind sediment particles together into a solid mass.
Final Answer: Option C - Compaction and cementation