Which one of the following was used as a chemical weapon in the First World War? Options: A . &nbspCarbon monoxide B . &nbspHydrogen cyanide C . &nbspMustard gas D . &nbspWater gas

Which one of the following was used as a chemical weapon in the First World War?

Question

Which one of the following was used as a chemical weapon in the First World War?

Options:

A . Carbon monoxide

B . Hydrogen cyanide

C . Mustard gas

D . Water gas

Answer: Option C
:
C
Option:(c)

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