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Which of the following statements about entropy is/are correct? 1. Entropy increases in spontaneous processes. 2. Entropy of the universe remains constant for irreversible processes.

1. Only 1
2. Only 2
3. Both
4. Neither

Correct answer: Only 1

Solution

In spontaneous processes, the entropy of the universe increases. For irreversible processes, the entropy of the universe does not remain constant; it increases. Hence only statement 1 is correct.

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