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Question

What is the freezing point of ammonia?


A

-70 degree celsius

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B

-77.7 degree celsius

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C

-50 degree celsius

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D

-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 oC. Since the freezing point is very low, ammonia can also be used for refrigeration.


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