What is the freezing point of ammonia?

-70 degree celsius

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-77.7 degree celsius

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-50 degree celsius

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-40 degree celsius

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Solution

The correct option is B
-77.7 degree celsius

The freezing point/melting point of ammonia is $- 77.78^{o} C$ . Since the freezing point is very low, ammonia can also be used for refrigeration.

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