Question

What is the composition of tear gas?

• A. $ KCl\,.\,\,MgCl_{2}24H_{2}O $
• B. $ Na_{2}S_{2}O_{3}\,.\,\,nH_{2}O $
• C. $ Cl_{3}CNO_{2} $
• D. $ K_{4}Fe(CN)_{6} $

Answer 1

Answer: (C)

The composition of tear gas is $ Cl_{3}CNO_{2} $ . It is formed when chloroform react with $ HNO_{3} $ . In this reaction nitration of chloroform takes place.
Chloropicrin is also used as an insecticide.