• # question_answer $KI$ when heated with conc. ${{H}_{2}}S{{O}_{4}}$ gives [MP PET/PMT 1988] A) $HI$ B) ${{I}_{2}}$ C) $HI{{O}_{3}}$ D) $KI{{O}_{3}}$

$KI+{{H}_{2}}S{{O}_{4}}\,\xrightarrow{\Delta }\,KHS{{O}_{4}}+HI$ ${{H}_{2}}S{{O}_{4}}+2HI\,\to \ 2{{H}_{2}}O+\underset{\text{Violet vapour}}{\mathop{{{I}_{2}}+S{{O}_{2}}\uparrow }}\,$