Solved UPSC CDS/OTA Question
A solved UPSC CDS/OTA PYQ — decoded step-by-step.
Solve it the standard way once — then learn the shortcut.
Q · Solar System Medium · 45s
Which planet has the highest density? (UPSC Prelims)
TopicSolar System
Question Typemultiple choice
DifficultyMedium
Marking+1 / −0.33
Test Duration30 min
Step-by-Step Solution
The complete worked solution.
Every step explained — no skipped algebra.
Earth has the highest average density (~5.52 g/cm³) among the planets.
Final Answer: Option B — Earth