Answer :
The chemical weapon introduced by Germany during WWI with the chemical composition C4H8Cl2S is mustard gas (option 1). This insidious weapon caused blisters, blindness, and respiratory issues, with its effects sometimes taking 24 hours to begin.
During World War I, the German military utilized various types of chemical weapons against their enemies, one of which was known as mustard gas (option 1). The compound C4H8Cl2S referred to in the question is indeed mustard gas, making the first option the correct answer.
This chemical weapon could result in severe blisters, blindness, respiratory problems, and even death. Unlike chlorine and phosgene gas, which acted quickly, the effects of mustard gas exposure could take up to 24 hours to manifest and weeks to prove fatal. Mustard gas was introduced later in the war, while chlorine gas appearances early on, and phosgene, known for being colorless and less immediately symptomatic, was utilized throughout the conflict.
