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Q. Colloidal sulphur is obtained when

NTA AbhyasNTA Abhyas 2022

Solution:

$HNO_{3}$ oxideses $H_{2}S$ to $\text{S}$ , which is obtained in colloidal form
$\text{H}_{2} \text{S} + 2 \text{H} \text{N} \text{O}_{3} \rightarrow \text{S} + 2 \text{N} \text{O}_{2} + 2 \text{H}_{2} \text{O}$