Electrophilic substitution of benzene

Electrophilic substitution of benzene Quiz

Spec 18.4–5 · Edexcel International A Level Chemistry: Quiz

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  1. 1. What is the electrophile in the nitration of benzene?

    • A. NO₂⁻
    • B. HNO₃
    • C. NO₃⁻
    • D. NO₂⁺

  2. 2. Which pair of reagents is used to brominate benzene?

    • A. Br₂ and anhydrous FeBr₃
    • B. Br₂ in water
    • C. HBr and UV light
    • D. Br₂ and aqueous NaOH

  3. 3. What is formed when benzene reacts with CH₃COCl and anhydrous AlCl₃?

    • A. Methylbenzene
    • B. Phenylethanone
    • C. Benzoic acid
    • D. Nitrobenzene

  4. 4. What happens to the delocalised ring in the intermediate of electrophilic substitution?

    • A. It is fully destroyed and cannot reform
    • B. It is unchanged
    • C. It is partly broken and carries a positive charge
    • D. It forms three localised double bonds

  5. 5. Why does benzene burn with a smoky flame?

    • A. Benzene has a high proportion of carbon, so soot forms
    • B. Benzene contains oxygen
    • C. Benzene burns too slowly
    • D. Benzene contains sulfur

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