JAMB Chemistry 2021 Objective — Question 20

Question 20 of 41 from the Joint Admissions and Matriculation Board (JAMB) Chemistry 2021 Objective paper, with the correct answer and a full explanation.

Which of the following hydrocarbons are capable of undergoing substitution reactions?

A. C₂₀H₄₂Correct
B. Propene
C. But-2-ene
D. None

Explanation

Alkanes undergo free radical substitution (e.g. halogenation). C₂₀H₄₂ is a large alkane. Unsaturated hydrocarbons (alkenes) normally undergo addition reactions, not substitution.

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