JEE Advanced 2020 Full Test 7 Paper 1

Question : 34 of 54

Marks: +1, -0

Among the following, in how many number of colloids, particles of D.P. move towards cathode during electro-osmosis? Ferric hydroxide, methylene blue, Au, arsenius sulphide, Haemoglobin, Starch, silicic acid, congo red, gelatin