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Chemistry
Alum is added to the water containing suspended impurities so that
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Q. Alum is added to the water containing suspended impurities so that
Surface Chemistry
A
it becomes colloidal in nature
B
the colloidal solution formed do not form precipitates
C
suspended impurities gets coagulated
D
impurities of metals like $Mg , Ca$ etc., can be removed
Solution:
Correct answer is (c) suspended impurities gets coagulated