Question: which of the following is the reactive chemical warfare agent first used in world war 1
Answer: mustard gas; Iprit; bis(2-chloroethyl)sulfane; 1-chloro-2-[(2-chloroethyl)thio]ethane; Bis(2-chloroethyl) sulphide; Senfgas; Lost; sulfur mustard; dichlorodiethylsulfide; 1,1'-thiobis(2-chloroethane); bis(2-chloroethyl) sulphide; HD; Yperite; Mustard; bis(2-chloroethyl) sulfide