STANDARDChemistry-Thermodynamics
STANDARD Chemistry Adiabatic Processes MCQ Question
Type: MCQ-conceptual-Medium-Class 11
In an adiabatic process, no transfer of heat takes place between system and surroundings. Choose the correct option for free expansion of an ideal gas under adiabatic condition from the following.
A
q = 0, ΔT ≠ 0, W = 0
B
q ≠ 0, ΔT = 0, W = 0
C
q = 0, ΔT = 0, W = 0
D
q = 0, ΔT < 0, W ≠ 0
Correct Answer
Option C
Detailed Explanation
For free expansion (i.e. in vacuum), P_ext = 0. Thus, W = -P_ext ΔV = 0. For adiabatic change, q = 0. U = q + W = 0 which is true for isothermal process where T is constant i.e., ΔT = 0.
Found an issue with this question?