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Applications of Agriculture Chemistry

Calcium cyana...

Question

Calcium cyanamide is used as fertiliser because on hydrolysis it gives _______ .

A

ammonia

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B

calcium carbide

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C

nitrogen gas

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D

nitrogen oxide

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Solution

The correct option is C ammonia
The main use of calcium cynamide is in agriculture as a fertilizer. In contact with water it decomposes and liberates ammonia.
${C a C N}_{2} + 3 H_{2} O \to {2 N H}_{3} + {C a C O}_{3}$

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in a limited supply of oxygen to form carbon monoxide and water.
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A

is formed on the hydrolysis of calcium cyanamide. The gas can turn moist litmus paper blue and forms a brown precipitate with Nessler's reagent. The gas,

A

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