During the first world war, which of the following gas was utilised as the chemical weapon?
A. Carbon monoxide
B. Hydrogen cyanide
C. Mustard gas
D. Burning vapour
Answer: Option C
Related Questions on Organic Chemistry
Traditional 'battery' contains which of the following chemicals?
A. Ethylene glycol
B. Sulphuric acid
C. Sodium bicarbonate
D. Ethanol

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