Multiple choice

The by-product of coal tar is used in industries in the manufacture of

  1. lubricants for machines

  2. vaseline

  3. boot polish

  4. fertilisers

Reveal answer Fill a bubble to check yourself
D Correct answer
Explanation

Fertiliser manufacturing industries use ammoniacal liquor, which is a by-product of coal tar, which in turn is obtained during the destructive distillation of coal. All other products are manufactured with the use of petroleum constituents.