Cambridge IGCSE · Chemistry (0620)

Alkanes: Practice Questions

5 multiple-choice questions marked as you go, and 4 written questions with worked solutions. All on Alkanes.

9 questions19 marksFree, no account

Question 1

1 mark

Which statement correctly describes the bonding and saturation of alkanes?

Question 2

1 mark

What is the general formula for the homologous series of alkanes?

Question 3

1 mark

When one mole of an alkane undergoes complete combustion, it produces exactly 6 moles of water. What is the name of this alkane?

Question 4

1 mark

Which products are produced during the complete combustion of an alkane?

Question 5

1 mark

Alkanes react with chlorine in a photochemical reaction.
Which statement about this reaction is correct?

Question 6

3 marks

Explain what is meant by a saturated hydrocarbon in terms of its bonding.

Write your answer out first, then check it against the worked solution.

Question 7

5 marks

Describe the type of reaction and the essential condition required when methane reacts with chlorine to form chloromethane.

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Question 8

3 marks

Methane belongs to the alkane homologous series and undergoes substitution reactions with halogens.
(a) State the essential condition required for methane to react with chlorine gas.
(b) Write the balanced chemical equation for the formation of chloromethane (\( \text{CH}_3\text{Cl} \)) from methane and chlorine.
(c) Explain why this reaction is described as a substitution reaction.

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Question 9

3 marks

Alkanes are a group of saturated hydrocarbons that are used extensively as fuels.

(a) Define the term hydrocarbon.

(b) State the general formula for the alkane homologous series.

Write your answer out first, then check it against the worked solution.

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