A) Dialysis
B) Coagulation
C) Adsorption
D) Forming a true solution
Correct Answer: B
Solution :
Coagulation Muddy water is a colloid. Alum acts as an electrolyte and helps in coagulation. After adding alum, water is allowed to travel through flocculation basins where t is gently stirred by slow moving paddles and large particles referred to as floe which is to be removed during sedimentation and filtration.
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