A) Le-Chatelier's principle
B) peptisation
C) neutralization of charge on colloidal particles
D) scattering of light'
Correct Answer: C
Solution :
In Cottnell?s precipitator, the charged particles are attracted towards the walls of precipitator, here they lose their charge and coagulate. Hence, the basic principle of Cottnell?s precipitator is the neutralisation of charge on colloidal particles.
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