Solved UPSC CDS/OTA Question
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Q · Geological Time ScaleMedium · 45s
Which of the following is the correct chronological order of the Eras within the Phanerozoic Eon?
TopicGeological Time Scale
Question Typemultiple choice
DifficultyMedium
Marking+1 / −0.33
Test Duration30 min
Step-by-Step Solution
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Explanation:The Phanerozoic Eon comprises:
Paleozoic Era (oldest)
Mesozoic Era
Cenozoic Era (youngest)
Final Answer: Option B — Paleozoic → Mesozoic → Cenozoic