Which of the following is not correct?
Thermodynamics · Class 11 · JEE Main Previous Year Question
Which of the following is not correct?
- a
is negative for a spontaneous reaction
- b✓
is positive for a spontaneous reaction
- c
is zero for a reversible reaction
- d
is positive for a non-spontaneous reaction
is positive for a spontaneous reaction
🧠 Spontaneity: A reaction is spontaneous when is negative — that's the fundamental criterion. Option (b) claims is positive for a spontaneous reaction — the opposite of the rule.
Options (a), (c), and (d) are standard correct statements: (a) for spontaneous ✓ (c) at reversible (equilibrium) conditions ✓ (d) for non-spontaneous ✓
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