Q.

Tear gas used by the police to disperse the mob contains -

A. Carbon dioxide
B. Chlorine
C. Ammonia
D. Hydrogen sulphide
Answer» B. Chlorine
Explanation: Tear gas, formally known as a lachrymatory agent, is a possibly lethal chemical weapon that stimulates the corneal nerves in the eyes to cause tears, pain, and even blindness.
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