Question

Identify the correct statements from the following:
(a) $C{O}_2\left(g\right)$ is used as refrigerant for ice-cream and frozen food.
(b) The structure of $C_{60}$ contains twelve six carbon rings and twenty five carbon rings.
(c) ZSM-5, a type of zeolite, is used to convert alcohols into gasoline.
(d) $CO$ is colourless and odourless gas.

• A. (b) and (c) only
• B. (c) and (d) only
• C. (a) , (b) and (c) only
• D. (a) and (c) only

Answer 1

The correct option is B (c) and (d) only

(a) $C{O}_2$ in solid state used as refrigerant for ice-cream and frozen food because of its sublimation properties. Sublimation is a process in which a solid directly goes into gaseous state without going into liquid state.
(b) The structure of$C_{60}$ contains twelve five-carbon rings and twenty six-carbon rings. Hence the given statement is wrong.
(c) ZSM-5, a type of zeolite , is used to convert alcohols into gasoline
(d) $CO$ is colourless & odourless gas