Solved UPSC CDS/OTA Question
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Q · Solar System medium · 45s
Which planet is closest to the Sun?
TopicSolar System
Question Typemultiple choice
Difficultymedium
Marking+1 / −0.33
Test Duration30 min
Step-by-Step Solution
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Mercury is the innermost planet in the Solar System, orbiting at an average distance of about 57.9 million kilometers from the Sun. It has a very thin atmosphere, extreme temperature fluctuations between day and night due to lack of atmosphere, and a rocky, cratered surface. Despite being closest to the sun, Mercury isn’t the hottest planet because it lacks a significant atmosphere to trap heat.
Final Answer: Option B - Mercury