Q. Which of the following impurities present in colloidal solution cannot be remove by electrodialysis?
A) Sodium chloride
B) Potassium sulphate
C) Urea
D) Calcium chloride
Explanation
(c)
Electrolysis is the technique by which electrolytic impurities can be removed. Hence, urea, being non-electrolyte cannot be removed by this nethod.
Reviewed by Dr. Abubacker
Physics Educator & NEET/JEE Specialist
Ph.D. in Physics with 19+ years of teaching experience.