Multiple choice

Tar gas is

  1. Chloroprene

  2. Carbonyl chloride

  3. Nitrous oxide

  4. Bleaching powder
Reveal answer Fill a bubble to check yourself
C Correct answer
Explanation

Tar gas is commonly known as nitrous oxide (N2O), also called laughing gas. Historically, nitrous oxide was sometimes obtained from the distillation of coal tar or similar organic materials. The term 'tar gas' refers to this association with tar distillation processes.

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