1
Question
Ferric hydroxide sol is positively charged colloid. The coagulating power of
ions would be in the order
Ferric hydroxide sol is positively charged colloid. The coagulating power of
ions would be in the order
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Solution
The correct option is C
According to Hardy schulze rule the ions having opposite charge to sol particle cause coagulation and greater the valency of oppositely charged ion more is the coagulating power 
).
According to Hardy schulze rule the ions having opposite charge to sol particle cause coagulation and greater the valency of oppositely charged ion more is the coagulating power ).
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ions would be in the
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