44. Which one of the following was used as a chemical weapon in the first world war ? A.Carbon monoxide B.Hydrogen cyanide C.Mustard gas D.Water gas
Answer: Option C Solution: Although the Germans were the first to use phosgene on the battlefield, it became the primary chemical weapon of the Allies. Phosgene was responsible for 85% of chemical-weapons fatalities during World War I. Mustard gas, a potent blistering agent, was dubbed King of the Battle Gases.
