Among the following compounds, which on heating do not produce $N_{2}$ ?

(

N H_{4})_{2} C r_{2} O_{7}

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N H_{4} C l + N a N O_{2}

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N H_{4} C l + C a O

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B a (N_{3})_{2}

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Solution

The correct option is C $N H_{4} C l + C a O$

(NH $_{4}$ ) $_{2}$ Cr $_{2}$ O $_{7}$ $\to$ N $_{2}$ + Cr $_{2}$ O $_{3}$ + H $_{2}$ O

NH $_{4}$ Cl + NaNO $_{2}$ $\to$ N $_{2}$ + H $_{2}$ O + NaCl

2 NH $_{4}$ Cl + CaO $\to$ 2 NH $_{3}$ + CaCl $_{2}$ + H $_{2}$ O

Ba(N $_{3}$ ) $_{2}$ $heat - - \to$ Ba + 3N $_{2}$

Thus, 2 NH $_{4}$ Cl + CaO will not produce N $_{2}$ .

Hence, the correct option is $C$

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