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CAIE IGCSE Chemistry 11.1.2 Write and Interpret General Formulae Questions

Work through real CAIE IGCSE Chemistry questions to recall general formulae, calculate member formulae and identify homologous-series patterns.

Syllabus
2026–2028
Course
Chemistry 0620

Exam points

  • recall the general formulae for alkanes and alkenes and substitute the stated carbon number
  • apply the alcohol and carboxylic-acid general formulae without dropping the functional group
  • recognise or derive general formulae for alkynes and aldehydes from molecular-formula data
  • derive or recognise a homologous-series formula from several molecular formulae in a table

CAIE IGCSE Chemistry 11.1.2 Write and Interpret General Formulae Questions question 1

[Maximum number: 1]

Which formula represents an alkene?

A

CH4\mathrm{CH}_{4}

B

C2H4\mathrm{C}_{2} \mathrm{H}_{4}

C

C2H6\mathrm{C}_{2} \mathrm{H}_{6}

D

C2H5OH\mathrm{C}_{2} \mathrm{H}_{5} \mathrm{OH}

All question bank results loaded