railway RRB JE (CBT I + CBT II) Mock Test 2024 Thermodynamics Second Law of Thermodynamics and Entropy Entropy and Irreversibility
Which of the following second-law statement is incorrect
1
The entropy of an isolated system must remain constant or increase
2
The entropy of a hot copper block decreases as it cools down
3
If ice is melted in water in an insulated container, the net entropy decreases
4
Work must be input if energy is transferred from a cold body to a hot body