Published by:
CGP EDU Academic Team
Published on: August 12, 2026
For precipitating 
sol, the best precipitating agent is
A
B
C
D
Text Solution
Verified by ExpertsThe correct answer is:
D
According to Hardy-Schulze rule, greater is the valency of ions, greater is its power to bring about coagulation. 
is a positive sol, hence the best coagulant for precipitation of 
is 
as it gives 
. The ion with highest negative valency.
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