Q5 / 90 · JEE Main 2024 (04 Apr Shift 2) · Chemistry

When $\mathrm{MnO}_2$ and $\mathrm{H}_2 \mathrm{SO}_4$ is added to a salt (A), the greenish yellow gas liberated as salt (A) is :

A
$\mathrm{CaI}_2$
B
$\mathrm{NaBr}$
C
$\mathrm{KNO}_3$
Correct answer
D
$\mathrm{NH}_4 \mathrm{Cl}$

Solution

$\begin{aligned} & 2 \mathrm{NH}_4 \mathrm{Cl}+\mathrm{MnO}_2+2 \mathrm{H}_2 \mathrm{SO}_4 \xrightarrow{\Delta} \mathrm{MnSO}_4 \\ & +\left(\mathrm{NH}_4\right)_2 \mathrm{SO}_4+2 \mathrm{H}_2 \mathrm{O}+\underset{\substack{\text { greenish } \\ \text { yellow } \\ \text { solution }}}{\mathrm{Cl}_2 \uparrow}\end{aligned}$

Hence, the correct answer is option: 'D'.

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When \(\mathrm{MnO}_2\) and \(\mathrm{H}_2 \mathrm{SO}_4\) is added to a salt (A), the greenish yellow gas liberated as salt (A) is :

Solution

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