JEE Main Chemistry question

Not in JEE Main or NEET syllabus

Which of the following impurities present in colloidal solution cannot be removed by electrodialysis?

(A)Sodium chloride
(B)Potassium sulphate
(C)UreaCorrect
(D)Calcium chloride

Answer: (C)

Solution

Electrodialysis removes ionic (electrolyte) impurities from a colloidal solution by driving them, under an electric field, through a membrane towards the oppositely charged electrode. NaCl,

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Question ID VK-144766