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Chemistry · May / June 2024 · Paper 12 · Question 32

5070Formulae, functional groups and terminology

Which statement is correct?

  1. AAn unsaturated hydrocarbon is one in which more solute can dissolve.
  2. BMembers of a homologous series each differ from the next by a –CH2– unit.
  3. CStructural isomers have the same displayed formula but different structural formulae.
  4. DThe general formula of the carboxylic acid homologous series is CnH2nCOOH.

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Correct answer: B. Members of a homologous series each differ from the next by a –CH2– unit.

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