{:(,"Column A",,,"Column B"),(A.,"Sedimentation","()",a.,"Softened water"),(B.,"Filtration","()",b.,"Additional of alum"),(C.,"Chlorination","()",c.,"Removal of suspended impurities"),(D.,"Permutit","()",d.,"Purification of drinking water"):}

{:(,"Column A",,,"Column B"),(A.,"Sedimentation","()",a.,"Softened wat

1.	{:(,"Column A",,,"Column B"),(A.,"Sedimentation","()",a.,"Softened water"),(B.,"Filtration","()",b.,"Additional of alum"),(C.,"Chlorination","()",c.,"Removal of suspended impurities"),(D.,"Permutit","()",d.,"Purification of drinking water"):}
Answer» Solution :A - b Addition of alum hastens the rate of sedimentation. B - c FILTRATION is the PROCESS by which suspended IMPURITIES can be REMOVED. C - d Chlorination is the process used for disinfecting drinking water. D - a Permutit process is used to soften the HARD water.