Question

Which one is known as tear gas?

• A. $COCl_{2}$
• B. $CH_{3}Cl$
• C. $CH_{3}COCl$
• D. $CCl_{3}NO_{2}$

Answer 1

Answer: (D)

Tear gas is $CCl_{3}NO_{2}$ which is formed by the nitration of chloroform as follows
$CHCl_{3}+HNO_{3} \rightarrow \underset{C h l o r o \, p i c r i n o r \, t e a r \, g a s}{C C l_{3} N O_{2}}+H_{2}O$