Question

Hardening of leather in tanning industry is based on

(A)Electrophoresis
(B)Electro-osmosis
(C)Mutual coagulation
(D)Tyndall effect​

Answer 1

Answer:

b. mutual coagulation

hope it will help you

Answer 2

Hardening of leather in tanning industry is based on (C) Mutual coagulation.

- The chemical used in process of tanning is known as Tannin.

- It contains negatively charged colloidal particles whereas leather contains positively charged colloidal particles.

- When the leather is soaked in tannin, due to the difference in charges, mutual coagulation occurs.

- This coagulation results in the hardening of the leather after tanning process.