Solved UPSC CDS/OTA Question
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Q · Rocks and Rock Cyclemedium · 45s
How are metamorphic rocks classified?
TopicRocks and Rock Cycle
Question Typemultiple choice
Difficultymedium
Marking+1 / −0.33
Test Duration30 min
Step-by-Step Solution
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Metamorphic rocks are classified into foliated and non-foliated categories based on texture. Foliated rocks, like slate and gneiss, have aligned mineral grains forming layers or bands, while non-foliated rocks, like marble and quartzite, lack this layering.
Final Answer: Option B - Based on origin: foliated and non-foliated