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JAMB Chemistry 2010 Question 43

Question 43

Hydrocarbons

Benzene reacts with hydrogen in the presence of nickel catalyst at 180°C to give

  1. A.xylene
  2. B.toluene
  3. C.cyclopentane
  4. D.cyclohexane
Show the answer and explanation

Answer: D (cyclohexane)

Explanation

C6H6 + 3H2 → C6H12 (cyclohexane); the six-carbon ring is kept.