Sedimentation on Environmental Studies related Questions and Answers

Question :   Which of the following statement is wrong regarding Iron salt? 1. Iron salt produces less floc than Alum 2. Detention time for sedimentation by using Iron salt as coagulant is less 3. Handling of Iron salt requires some skills 4. Iron removes H2S, taste and odor Answer :   1 - Iron salt produces less floc than Alum