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NTA Abhyas 2020

Exam: NTA Abhyas
Year: 2020
Subject: Chemistry
Chapter: s Block Elements

NTA Abhyas 2020 · Chemistry · s Block Elements

The reaction of calcium cyanamide with water yields

The reaction of calcium cyanamide with water yields

Options

ACa{ $\left(OH\right)}_{2}$ and ${N}_{2}$
B $Ca{C}_{2}$ and ${N}_{2}{H}_{4}$
CCa{ $\left(HC{O}_{3}\right)}_{2}$ and $N{H}_{3}$
D $CaC{O}_{3}$ and $N{H}_{4}OH$

Correct answer

D. $CaC{O}_{3}$ and $N{H}_{4}OH$

Step-by-step solution

It is good fertilizer and is prepared by heating

Ca{C}_{2}

and

{N}_{2}

at 1370 K.

Ca{C}_{2} + {N}_{2} \to \mathop{\mathop{CaC{N}_{2} + C}_{⎵}}_{\text{Nitrolim}}

CaC{N}_{2} + 5{H}_{2}O \to CaC{O}_{3} + 2N{H}_{4}OH

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