Solved UPSC CDS/OTA Question
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Q · The Universe medium · 45s
Which planet is known as the "Red Planet"?
TopicThe Universe
Question Typemultiple choice
Difficultymedium
Marking+1 / −0.33
Test Duration30 min
Step-by-Step Solution
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Mars is called the "Red Planet" because of iron oxide (rust) on its surface giving it a reddish appearance.
Final Answer: Option B - Mars