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A solution of colourless salt $\mathrm{H}$ on boiling with excess $\mathrm{NaOH}$ produces a non-flammable gas. The gas evolution ceases after sometime. Upon addition of $\mathrm{Zn}$ dust to the same solution, the gas evolution restarts. The colourless salt (s) $\mathrm{H}$ is (are)
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Verified Answer
The correct answers are:
$\mathrm{NH}_4 \mathrm{NO}_3$
,
$\mathrm{NH}_4 \mathrm{NO}_2$
$\mathrm{NH}_4 \mathrm{NO}_3$
,
$\mathrm{NH}_4 \mathrm{NO}_2$
$$
\begin{aligned}
& \mathrm{NH}_4 \mathrm{NO}_3+\mathrm{NaOH} \longrightarrow \mathrm{NaNO}_3+\mathrm{NH}_3+\mathrm{H}_2 \mathrm{O} \\
& \mathrm{NaNO}_3+8[\mathrm{H}] \mathrm{NaOH}+\mathrm{NH}_3+2 \mathrm{H}_2 \mathrm{O} \\
& \mathrm{NH}_4 \mathrm{NO}_2+\mathrm{NaOH} \longrightarrow \mathrm{NaHO}_2+\mathrm{NH}_3+\mathrm{H}_2 \mathrm{O} \\
& \mathrm{NaNO}_2+6[\mathrm{H}] \longrightarrow \mathrm{NaOH}+\mathrm{NH}_3+\mathrm{H}_2 \mathrm{O}
\end{aligned}
$$
\begin{aligned}
& \mathrm{NH}_4 \mathrm{NO}_3+\mathrm{NaOH} \longrightarrow \mathrm{NaNO}_3+\mathrm{NH}_3+\mathrm{H}_2 \mathrm{O} \\
& \mathrm{NaNO}_3+8[\mathrm{H}] \mathrm{NaOH}+\mathrm{NH}_3+2 \mathrm{H}_2 \mathrm{O} \\
& \mathrm{NH}_4 \mathrm{NO}_2+\mathrm{NaOH} \longrightarrow \mathrm{NaHO}_2+\mathrm{NH}_3+\mathrm{H}_2 \mathrm{O} \\
& \mathrm{NaNO}_2+6[\mathrm{H}] \longrightarrow \mathrm{NaOH}+\mathrm{NH}_3+\mathrm{H}_2 \mathrm{O}
\end{aligned}
$$
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