NEET2021Chemistry-Thermodynamics
NEET 2021 Chemistry Entropy MCQ Question
Type: MCQ-conceptual-Medium-Class 11
For irreversible expansion of an ideal gas under isothermal condition, the correct option is:
A
ΔU = 0, ΔS_total = 0
B
ΔU ≠ 0, ΔS_total ≠ 0
C
ΔU = 0, ΔS_total ≠ 0
D
ΔU ≠ 0, ΔS_total = 0
Correct Answer
Option C
Detailed Explanation
In an isothermal process, the internal energy change (ΔU) is zero. However, for an irreversible process, the total entropy change (ΔS_total) is not zero.
Found an issue with this question?