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CAIE IGCSE Chemistry 11.4 Alkanes Questions

Practise recognising alkane bonding, combustion products and chlorine substitution reactions under ultraviolet light.

Syllabus
2026–2028
Course
Chemistry 0620

Exam points

  • identify alkanes from formulae or names by single covalent bonding
  • state carbon dioxide and water as products of complete combustion
  • link chlorine substitution to ultraviolet light and replacement of H by Cl

Covered syllabus points

11.4.1—Bonding in alkanes is single covalent11.4.2—Properties of alkanes as being11.4.3—In a substitution reaction one atom or11.4.4—Substitution reaction of alkanes with

Question 1

[Maximum number: 1]

Which molecule contains only single covalent bonds?

A

propane

B

propanoic acid

C

propene

D

propyl propanoate

Question 2

[Maximum number: 1]

Some properties of four fuels are shown.
Which fuel is a gas at room temperature and makes two products when it burns in a plentiful supply of air?

fuel

formula

melting point

/∘C/^{\circ} \mathrm{C}

boiling point

/∘C/^{\circ} \mathrm{C}

hydrogen

H2\mathrm{H}_{2}

-259

-253

methane

CH4\mathrm{CH}_{4}

-182

-164

octane

C8H18\mathrm{C}_{8} \mathrm{H}_{18}

-57

126

wax

C31H64\mathrm{C}_{31} \mathrm{H}_{64}

60

400

Question 3

[Maximum number: 1]

The equation for the reaction between butane, C4H10\mathrm{C}_{4} \mathrm{H}_{10}, and chlorine is shown.

C4H10+Cl2→C4H9Cl+HCl\mathrm{C}_{4} \mathrm{H}_{10}+\mathrm{Cl}_{2} \rightarrow \mathrm{C}_{4} \mathrm{H}_{9} \mathrm{Cl}+\mathrm{HCl}

Which type of reaction does butane undergo when it reacts with chlorine?

A

addition

B

reduction

C

acid-base

D

substitution

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