Single Choice

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 alcohol into gasoline. d) $$CO$$ is a colorless and odourless gas

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

Solution

a) $$CO_2$$ 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 was wrong.

c) $$ZSM-5$$, a type of zeolite, is used to convert alcohol into gasoline. The statement is correct.

d) $$CO$$ is a colorless and odourless gas. True.


Statements (c) and (d) are correct.
Option C is correct.

SIMILAR QUESTIONS

p - block Elements

The number of $$\displaystyle C-C$$ linkages in $$\displaystyle C_{60}$$ ( Fullerene ) is:

p - block Elements

The wrong statement about fullerene is:

p - block Elements

$${C}_{60}$$ an allotrope of carbon contains:

p - block Elements

The number of pentagons in $$C_{60}$$ and trigons (triangles) in white phosphorus, respectively, are:

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