Q 11-11-143JEE MainJEE Main 2020 (3 Sep, Shift 1)Easy
A balloon filled with helium ($32^\circ\text{C}$ and $1.7\ \text{atm}$) bursts. Immediately afterwards the expansion of helium can be considered as:
Answer: (B) irreversible adiabatic
The burst is sudden, so there is no time for heat exchange with the surroundings (adiabatic), and the gas expands violently against a much lower pressure, far from equilibrium (irreversible).
Solution by Sreeraj P, M.Sc Physics