Solved UPSC CDS/OTA Question
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Q · Internal Structure of The EarthMedium · 45s
Which one of these is NOT part of the chemical composition of Earth’s crust?
TopicInternal Structure of The Earth
Question Typemultiple choice
DifficultyMedium
Marking+1 / −0.33
Test Duration30 min
Step-by-Step Solution
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Nickel is dominant in the core, not the crust.
Final Answer: Option D — Nickel