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Question

On compressing a gas suddenly, its temperature
  1. increases
  2. decreases
  3. remains constant
  4. all the above

A
all the above
B
increases
C
remains constant
D
decreases
Solution
Verified by Toppr

From the First Law of Thermodynamics,dQ=dU+dW

Sudden processes in ideal gases are adiabatic. So, dQ = 0.

So, dU = - dW

In compression of an ideal gas, dW < 0

So, dU > 0 hence dT > 0

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