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Q. No.Given below are two statements:
| Assertion (A): | Enthalpy and entropy of any elementary substance in the standard states are taken as zero. |
| Reason (R): | At absolute zero, particles of the perfectly crystalline substance become completely motionless. |
| 1. | Both (A) and (R) are True and (R) is the correct explanation of (A). |
| 2. | Both (A) and (R) are True but (R) is not the correct explanation of (A). |
| 3. | (A) is True but (R) is False. |
| 4. | (A) is False but (R) is True. |
Subtopic: Â 2nd & 3rd Law of Thermodynamics |
Level 4: Below 35%
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