Which of the following is an implication of the zeroth law of thermodynamics ?

Energy in the universe can neither be created nor destroyed

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A pure crystal kept at

- {273.15}^{o}

C has a very low entropy

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If systems A and B are in thermal equilibrium with system C , then systems A, B,C are in thermal equilibrium with each other

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Entropy of the universe is always increasing

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Solution

The correct option is C If systems A and B are in thermal equilibrium with system C , then systems A, B,C are in thermal equilibrium with each other
The option C is the direct statement of the zeroth law of thermodynamics, that if 2 bodies A and B are in thermal equilibrium, and B is in thermal equilibrium with C, then A and C are mutually in thermal equlibrium

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