5 past paper MCQs on Reactivity of Benzene, from the Chemistry of Hydrocarbons unit of MDCAT Chemistry. The year each question appeared is shown where known; tap “Show answer” for the correct option and a short solution.
1.Which one of the following is not a characteristic of benzene? (UHS MDCAT 2025)
Correct answer: (d) High reactivity
Delocalization makes benzene unusually stable, so it substitutes rather than reacting readily.
2.Addition of three molecules of chlorine into benzene prove that benzene has (SZABMU MDCAT 2025)
Correct answer: (a) double bonds
Three molecules of chlorine add to it, which is what three double bonds would take.
3.Which of the following is not oxidized by any oxidizing agent? (SZABMU MDCAT 2023)
Correct answer: (a) Benzene
Benzene resists oxidation; the side chain of an alkylbenzene is oxidized instead.
4.Benzene is less reactive than its corresponding alkene due to: (PMC MDCAT 2022)
Correct answer: (d) Delocalization of π electrons
The pi electrons are spread over the whole ring, so they are not available as an alkene’s are.
5.Which of the following is not an aromatic compound? (PMC Practice 2021)
Correct answer: (d) None of these options is correct
Anthracene, naphthalene and phenol are all aromatic, so none is the exception.