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Chemistry · Oct / Nov 2020 · Paper 12 · Question 36

5070Alkenes

Hydrocarbon compounds can form rings of carbon atoms as well as chains. The structures of two hydrocarbon rings are shown. [structures of P and Q] Which of P and Q is unsaturated and which reacts with aqueous bromine?

  1. Ais unsaturated: P; reacts with aqueous bromine: P
  2. Bis unsaturated: P; reacts with aqueous bromine: Q
  3. Cis unsaturated: Q; reacts with aqueous bromine: P
  4. Dis unsaturated: Q; reacts with aqueous bromine: Q

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Correct answer: D. is unsaturated: Q; reacts with aqueous bromine: Q

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