In chemical terms , what are alums used for purifying water for drinki – InterviewSolution

1.	In chemical terms , what are alums used for purifying water for drinking purposes ?
Answer» Hydrated chlorides DOUBLE nitrate Double sulphates NITRATES of aluminium Solution :Alum is used for all the double sulphates having the composition `M_(2)SO_(4) . M_(2)(SO_(4))_(3) . 24H_(2)O` Where M stands for MONOVALENT basic radicals. ALUMS have Germicide properties and thus used in PURIFICATION of water

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