JEE Main Chemistry question

Identify the correct statement regarding a spontaneous process. **[AIEEE 2007]**

(A)For a spontaneous process in an isolated system, the change in entropy is positiveCorrect
(B)Endothermic processes are never spontaneous
(C)Exothermic processes are always spontaneous
(D)Lowering of energy in the reaction process is the only criterion for spontaneity

Answer: (A)

Solution

By the second law, an isolated system undergoing a spontaneous process always has its entropy increase; endothermic and exothermic processes

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Question ID VK-134742