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Question

What is the odour of the gas released when NH4Cl and Ca(OH)2 are mixed? 



Your Answer
A

Fragrant

Correct Answer
B

Irritating and Pungent odour

Your Answer
C

Medicinal

Your Answer
D

No smell


Solution

The correct option is B

Irritating and Pungent odour


When we prepare ammonia in the classroom or laboratory by mixing ammonium chloride and calcium hydroxide, we sense an irritating and pungent smell. This is due to the formation of ammonia. The equation for the reaction is given below.

2NH4Cl+Ca(OH)2CaCl2+2H2O+2NH3

So, the odour of ammonia gas is irritating and pungent.

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