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WAEC Chemistry 2018 Objective — Question 2

Question 2 of 50 from the West African Examinations Council (WAEC) Chemistry 2018 Objective paper, with the correct answer and a full explanation.

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Which of the following organic compounds can undergo both addition and substitution reactions?

  • A. Pentane
  • B. BenzeneCorrect
  • C. Propane
  • D. Hexane

Explanation

Benzene, despite its ring stability, can undergo both substitution (its typical reaction) and addition reactions under certain conditions; the alkanes (pentane, propane, hexane) are saturated and can only undergo substitution.

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