Brass gets discolored in air because of the presence of which of the following gases in air ________A. Carbon dioxideB. OxygenC. NitrogenD. Hydrogen sulphide 0 0 votesArticle Rating Subscribe LoginNotify of new follow-up commentsnew replies to my comments Label {} [+] Name* Email* Website Label {} [+] Name* Email* Website 0 Comments Oldest Newest Most Voted Inline FeedbacksView all comments