Solved UPSC CDS/OTA Question
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Q · Rocks and Rock CycleMedium · 45s
Which of the following rocks has the highest hardness?
TopicRocks and Rock Cycle
Question Typemultiple choice
DifficultyMedium
Marking+1 / −0.33
Test Duration30 min
Step-by-Step Solution
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Quartzite is highly compact and harder than other listed rocks.
Final Answer: Option B — Quartzite