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Question

It is recommended that liquor ammonia bottle should be opened after cooling them in ice for sometime.This is because liquor ammonia:

A
brings tears in the eyes
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B
is a corrosive liquid
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C
is a mild explosive
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D
generates high vapour pressure
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Solution

The correct option is D generates high vapour pressure
The vapour pressure of ammonia at room temperature is very high and hence the ammonia will evaporate unless the vapour pressure is decreased. Cooling decreases the vapour pressure so that the liquid remains in the same state. Hence, the bottle is cooled before opening.
Hence, option (D) is correct.

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