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 · The Universe medium · 45s
Which cosmic phenomenon marks the universe's expansion from a hot, dense state?
TopicThe Universe
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.
The Big Bang theory describes the origin of the universe as a rapid expansion from a hot, dense point.
Final Answer: Option A - Big Bang