• # question_answer A gas reacts with $CaO$, but not with $NaHC{{O}_{3}}$. The gas is [AFMC 1987] A) $C{{O}_{2}}$ B) $C{{l}_{2}}$ C) ${{N}_{2}}$ D) ${{O}_{2}}$

$CaO+C{{l}_{2}}\,\to \,CaOC{{l}_{2}}$ $NaHC{{O}_{3}}+C{{l}_{2}}\,\to$ No reaction