Solved UPSC CDS/OTA Question
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Q · Heat and ThermodynamicsMedium · 45s
During an adiabatic expansion of an ideal gas, the temperature:
TopicHeat and Thermodynamics
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.
In an adiabatic expansion, the gas does work without gaining heat (Q = 0), so the internal energy decreases, resulting in temperature drop.
Final Answer: Option C - Decreases