What is the use of alum in purification of water?
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alum is used in purification as...it stick with the unpure particles of a colloidal solution (ex-sea/pond/river water , particles like clay etc.)
amd make.it heavy....then they get settled down....
amd make.it heavy....then they get settled down....
KartikeyaAcharya:
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the alum is used to purify the water it get heavier the germs and goes in the lower part of water
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