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Chemistry · Oct / Nov 2025 · Paper 12 · Question 31

5070Formulae, functional groups and terminology

Compound X is an alcohol containing only three carbon atoms. Compound Y is an alcohol containing only four carbon atoms. Both compounds have the general formula CnH2n+1OH. Which row shows the numbers of structural isomers of compounds X and Y that are unbranched alcohols?

  1. A1 2
  2. B2 2
  3. C2 3
  4. D1 3

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Correct answer: B. 2 2

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