Q. The compound that does not produce nitrogen gas by the thermal decomposition is

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Solution:

$\left(\right. \left(\text{NH}\right)_{4} \left.\right)_{2} \left(\text{SO}\right)_{4} \overset{\text{Δ}}{ \rightarrow } 2 \left(\text{NH}\right)_{3} \left(\text{g}\right) \left(\text{+H}\right)_{2} \left(\text{SO}\right)_{4}$
$\text{Ba} \left(\right. \left(\text{N}\right)_{3} \left.\right)_{2} \left(\text{s}\right) \overset{\text{Δ}}{ \rightarrow } \text{Ba} + 3 \left(\text{N}\right)_{2} \left(\text{g}\right)$
$\left(\right. \left(\text{NH}\right)_{4} \left.\right)_{2} \left(\text{Cr}\right)_{2} \left(\text{O}\right)_{7} \left(\text{s}\right) \rightarrow \left(\text{N}\right)_{2} \left(\text{g}\right) + \left(\text{Cr}\right)_{2} \left(\text{O}\right)_{3} \left(\text{s}\right) + 4 \left(\text{H}\right)_{2} \text{O}$
$\left(\text{NH}\right)_{4} \left(\text{NO}\right)_{2} \overset{\text{Δ}}{ \rightarrow } \left(\text{N}\right)_{2} \left(\text{g}\right) + 2 \left(\text{H}\right)_{2} \text{O}$