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JAMB Chemistry 1984 Question 30

Question 30

Petroleum and Coal

When the kerosene fraction from petrol is heated at high temperature, a lower boiling liquid is obtained. This process is known as

  1. A.polymerization
  2. B.refining
  3. C.hydrogenation
  4. D.cracking
  5. E.fractional distillation
Show the answer and explanation

Answer: D (cracking)

Explanation

Breaking large hydrocarbon molecules into smaller, lower-boiling ones by heat is called cracking.