the number of accurrenceof item corresponding to the class interval is known as By crictensJanuary 10, 2022Physics A: class boundary B: class mark C: class limit D: class frequency Post navigation Ion-exchange method is used to remove:Equal Leave a Reply Cancel replyYour email address will not be published. Required fields are marked *Comment * Name * Email * Website Save my name, email, and website in this browser for the next time I comment.