Which gas was used for the first time in World War I
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Methyl Isocynide
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Methyl Isopropile
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Chlorine
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Methyl Chlorine
C
Correct answer
Explanation
Chlorine gas was first used as a chemical weapon in World War I by Germany at the Second Battle of Ypres in April 1915. This marked the first large-scale use of poison gas in modern warfare. The other options are either incorrect chemical names or not used in WWI.