Solved UPSC CDS/OTA Question
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Q · Mineralsmedium · 45s
Which mineral has perfect cleavage in one direction?
TopicMinerals
Question Typemultiple choice
Difficultymedium
Marking+1 / −0.33
Test Duration30 min
Step-by-Step Solution
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Mica minerals exhibit perfect cleavage in one direction, allowing them to split into extremely thin, flexible sheets. This property results from weak bonds between layers of silicate sheets in the crystal structure. Common mica varieties include muscovite (white mica) and biotite (black mica). Mica's cleavage property makes it valuable for electrical insulation, cosmetics, and decorative applications.
Final Answer: Option A - Mica