# Nitrolim is a mixture of:(a) $Ca{{(CN)}_{2}}+$ graphite(b) $Ca{{C}_{2}}+$ graphite(c) $CaC{{N}_{2}}+$ graphite(d) $CaC{{N}_{2}}+{{N}_{2}}$

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Hint:. Nitrolim is a mixture which consists of the cyanamide of the alkali metal which has the atomic number as 20 and mass number as 40 and is a s-block element along with the carbon. Now with this you can easily identify the formula of the mixture of the nitrolim.

$Ca{{C}_{2}}+{{N}_{2}}\to CaC{{N}_{2}}+C$
- In other words, we can say that the nitrolim is a calcium salt of the cyanamide i.e. $CaC{{N}_{2}}$ and graphite.
So, thus Nitrolim is a mixture of $CaC{{N}_{2}} +$ graphite.