[" (a) Oxygen (b) Nitrogen (c) Fluorine (d) "56" gm of this gas "],[" The vapour density of gas is "11.2" .The volume occupied by "56gm" of this gas "],[" N.TP: "],[[" W.T.P."," (c) "14,2" lifes."," (c) "22,4" litres "," (d) "56" litres "]]