Permanent hardness of water may be removed by the addition of___________?A. Sodium CarbonateB. AlumC. Potassium PermanganateD. Lime 0 0 votesArticle Rating Subscribe LoginNotify of new follow-up commentsnew replies to my comments Label {} [+] Name* Email* Label {} [+] Name* Email* 0 Comments Oldest Newest Most Voted Inline FeedbacksView all comments