Solved UPSC CDS/OTA Question
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Q · Rocks and Rock Cyclemedium · 45s
What is the parent rock of marble?
TopicRocks and Rock Cycle
Question Typemultiple choice
Difficultymedium
Marking+1 / −0.33
Test Duration30 min
Step-by-Step Solution
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Marble forms from limestone, a sedimentary rock rich in calcite, through metamorphism involving heat and pressure. This process results in recrystallization of calcite grains, producing a denser rock with a crystalline texture.
Final Answer: Option A - Limestone