Question

Match the List I with List II and choose the correct option from the codes given below:

	List - I		List - II
(P)	Peptisation	(1)	Sky in blue
(Q)	Delta Formation	(2)	Gold number
(R)	Tyndall effect	(3)	Coagulation
(S)	Protection power of colloids	(4)	Adsorption of common ion

• A. P-3, Q-4, R-1, S-2
• B. P-2, Q-3, R-1, S-4
• C. P-3, Q-1, R-4, S-2
• D. P-4, Q-3, R-1, S-2

Answer 1

The correct option is D P-4, Q-3, R-1, S-2

Peptisation: Phenomenon in which a precipitate is passed into colloidal form by adsorption of common ions on its surface.

Delta formation: When river water (sol) meets seawater (electrolyte) coagulation occurs and delta is formed.

Tyndall effect: Scattering of light rays by suspended particles in a colloid is called the Tyndall effect and the sky looks blue due to Tyndall effect.

Protection of colloids: Protective power of colloids is inversely related to the Gold number.

Hence, option $\left(D\right)$ is correct.