JEE Main 2019 Chemistry question

Chemistry Surface Chemistry JEE Main 2019

Not in JEE Main or NEET syllabus

Haemoglobin and gold sol are examples of:

(A)positively charged sols
(B)negatively charged sols
(C)positively and negatively charged sols, respectivelyCorrect
(D)negatively and positively charged sols, respectively

Answer: (C)

Solution

Haemoglobin is a positive sol; gold sol is negative.

Question ID VK-010616