Question

Which of the following are the poisonous gases?

• A. Phosgene gas
• B. Tear gas
• C. Mustard gas
• D. All of the above

Answer 1

The correct option is D All of the above

Phosgene $\left(COC{l}_2\right)$ due to its poisonous nature was used in World War I, which causes lung toxicity. Mustard gas $\left(C_4{H}_{8}C{l}_{2}S\right)$ used in chemical warfare resulting in the formation of blisters on the exposed skin surface. Also known as CS (pronounced as "see yes") gas, tear gas causes pain, vomiting, blindness, skin infection and severe pulmonary damage. Phosgene and mustard gas are very highly toxic while tear gas is known to be lethal as well.