A) Iodide
B) Nitrate
C) Sulphate
D) Bromide
Correct Answer: A
Solution :
\[KI+\underset{\text{Conc}\text{.}}{\mathop{{{H}_{2}}S{{O}_{4}}}}\,\,\xrightarrow{\Delta }\,KHS{{O}_{4}}+HI\] Conc.\[\underset{\begin{smallmatrix} \,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\text{ }\,\,\,\,\text{ Violet}\,\text{ } \\ \text{ }\,\,\,\,\,\,\,\,\text{vapour } \end{smallmatrix}}{\mathop{{{H}_{2}}S{{O}_{4}}+2HI\,\to \,2{{H}_{2}}O+{{I}_{2}}+S{{O}_{2}}}}\,\uparrow \]
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