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Which statement(s) is /are correct...

Which statement(s) is /are correct

A

A solution is prepared by addition of excess of `AgNO_(3)` solution in KI solution. The charge likely to develop on colloidal particle is positive

B

The effects of pressure on physical adsorption is high if temperature is low

C

Ultracentrifugation process is used for preparation of lyophobic colloids.

D

Gold number is the index for extent of gold plating done.

Text Solution

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The correct Answer is:
A, B
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