• # question_answer Amongst ${{H}_{2}}O,$ ${{H}_{2}}S,$ ${{H}_{2}}Se$ and ${{H}_{2}}Te$ the one with the highest boiling point is [IIT-JEE (Screening) 2000] A) ${{H}_{2}}O$ because of hydrogen bonding B) ${{H}_{2}}$Te because of higher molecular weight C) ${{H}_{2}}S$ because of hydrogen bonding D) ${{H}_{2}}Se$ because of lower molecular weight

$CaO+C{{l}_{2}}\,\to \,CaOC{{l}_{2}}$ containing hydrogen bond.