Calcium Cyanamide - CaNCN, which is produced by the Nitrogen fixation reaction of heating $C a C_{2}$ and $N_{2}$ is black in colour.

True

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False

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Solution

The correct option is A True
Let us recall the cyanamide process:
$C a C_{2} + N_{2} \to C a C N_{2} + C$
As you can see, there is some carbon produced as the product. This gives CaNCN a black colour. When hydrolyzed in soil, CaNCN yields ammonia. A simple version of the reaction may be understood as
$C a C N_{2} + 3 H_{2} O \to 2 N H_{3} + C a C O_{3}$
In some interpretations, another reaction is also considered:
$C a C N_{2} + 4 H_{2} O \to C a (O H)_{2} + C O_{2} + 2 N H_{3}$

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Calcium Cyanamide - CaNCN, which is produced by the Nitrogen fixation reaction of heating CaC2 and N2 is black in colour.

Calcium Cyanamide - CaNCN, which is produced by the Nitrogen fixation reaction of heating $C a C_{2}$ and $N_{2}$ is black in colour.