MCQ
If gas, at constant temperature and pressure expands then its
- AEntropy increases and then decreases
- BInternal energy increases
- ✓Internal energy remains the same
- DInternal energy decreases
✓
Answer
Correct option: C.
Internal energy remains the same
(c)We know that internal energy of a gas depends upon its pressure and temperature. Thus if a gas expands at constant temperature and pressure, then its internal energy remains same.
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