(1) CO2 (s) (dry ice) [not CO2( g)] is used as refrigerant for ice cream and frozen food. (2) The structure of C60 contains 20 six carbon rings and 12 five carbon rings. (3) ZSM-5 (a type of zeolite) is used to convert alcohols directly into gasoline. (4) CO(g) is colourless and adourless gas