Solved UPSC CDS/OTA Question
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Q · Geological Time ScaleMedium · 45s
Which of these Eons had no life forms?
TopicGeological Time Scale
Question Typemultiple choice
DifficultyMedium
Marking+1 / −0.33
Test Duration30 min
← Previous questionQ 30 / 30
Step-by-Step Solution
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Explanation:The Hadean was before life evolved — Earth was molten and inhospitable.
Final Answer: Option A — Hadean