Geo-Scientist Prelims 2025 Chemistry Q62: Consider the following statements regarding entropy in a closed…

Consider the following statements regarding entropy in a closed system :

1. ΔS can never be negative.
2. For a reversible process, ΔS_univ must be zero.
3. For an adiabatic process, ΔS cannot be negative.
4. Equilibrium is reached when S achieves its maximum.

Which of the statement(s) given above is/are correct ?

1. (a) 1 and 2
2. (b) 2 and 3
3. (c) 3 and 4
4. (d) 3 only