JEE Main Chemistry question

When a gas undergoes adiabatic expansion, it gets cooled due to

(A)Loss of kinetic energy
(B)Fall in temperature
(C)Decrease in velocity
(D)Energy used in doing workCorrect

Answer: (D)

Solution

In an adiabatic expansion, , so by the first law . The expanding gas performs work against the external pressure, and this work is drawn entirely from the gas's own internal energy, so the gas cools because its internal energy is consumed in doing expansion work (option d) — this is the root

See the full step-by-step solution

Create a free account to read the complete working, and practise questions like this in a timed test.

Create a free account

Question ID VK-134892