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Question

Which compound does not give ammonia gas on reaction with water ?

A
Mg3N2
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B
AlN
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C
CaCN2
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D
Ca(CN)2
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Solution

The correct option is C Ca(CN)2
Mg3N2+6H2O3Mg(OH)2+2NH3

AlN+3H2ONH3+Al(OH)3

2H2O+Ca(CN)2Ca(OH)2+2HCN

CaCN2+3H2O CaCO3+2NH3

Ca(CN)2 does not produce ammonia on reacting with water.

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