2020 The p-Block Elements (Group 13 and 14)Carbon Family – Oxides, Fullerenes and Zeolites Medium Question 6 of 9 in The p-Block Elements (Group 13 and 14)

Identify the correct statements from the following: (a) $CO_2(g)$ 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 colorless and odourless gas.

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

The answer is C.

Solution

(a) Dry ice, i.e. solid $CO_2$, is used as a refrigerant, not $CO_2$ gas – incorrect. (b) $C_{60}$ contains twenty six-membered rings and twelve five-membered rings – incorrect as stated. (c) ZSM-5 zeolite is used to convert alcohols directly into gasoline – correct. (d) CO is a colourless and odourless gas – correct. So (c) and (d) only.

Concept properties and uses of carbon compounds

The p-Block Elements (Group 13 and 14) in past papers

9 questions from this chapter have appeared across 4 exam years.