Which of the following is not correct?

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(B) Option $A$ is correct: Ammonia is used as a refrigerant due to its high latent heat of vaporization.Option $B$ is incorrect: Nitrolim is a mixture

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$A$ mixture of $Ca(CN)_2$ and $C$ is known as nitrolim.

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(B) Option $A$ is correct: Ammonia is used as a refrigerant due to its high latent heat of vaporization.Option $B$ is incorrect: Nitrolim is a mixture of calcium cyanamide $(CaCN_2)$ and carbon $(C)$,not calcium cyanide $(Ca(CN)_2)$. The reaction is: $CaC_2 + N_2 \xrightarrow{1100^{\circ}C} CaCN_2 + C$.Option $C$ is correct: Superphosphate of lime is a mixture of $Ca(H_2PO_4)_2$ and $CaSO_4 \cdot 2H_2O$.Option $D$ is correct: Hydrolysis of $NCl_3$ yields $NH_3$ and $HOCl$ $(NCl_3 + 3H_2O \rightarrow NH_3 + 3HOCl)$.

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