JEE Main 2022 (Online) 28th June Morning Shift | Surface Chemistry Question 39 | Chemistry

	List - I		List - II
(A)	Lyophilic colloid	(I)	Liquid-liquid colloid
(B)	Emulsion	(II)	Protective colloid
(C)	Positively charged colloid	(III)	FeCl$$_3$$ + NaOH
(D)	Negatively charged colloid	(IV)	FeCl$$_3$$ + hot water

Choose the correct answer from the options given below :

(A) - (II), (B) - (I), (C) - (IV), (D) - (III)

(A) - (III), (B) - (I), (C) - (IV), (D) - (II)

(A) - (II), (B) - (I), (C) - (III), (D) - (IV)

(A) - (III), (B) - (II), (C) - (I), (D) - (IV)

JEE Main 2022 (Online) 25th June Morning Shift

MCQ (Single Correct Answer)

-1

Out of Syllabus

Incorrect statement for Tyndall effect is :

The refractive indices of the dispersed phase and the dispersion medium differ greatly in magnitude.

The diameter of the dispersed particles is much smaller than the wavelength of the light used.

During projection of movies in the cinemas hall, Tyndall effect is noticed.

It is used to distinguish a true solution from a colloidal solution.

JEE Main 2022 (Online) 25th June Morning Shift

MCQ (Single Correct Answer)

-1

Out of Syllabus

Using very little soap while washing clothes, does not serve the purpose of cleaning of clothes, because :

soap particles remain floating in water as ions.

the hydrophobic part of soap is not able to take away grease.

the micelles are not formed due to concentration of soap, below its CMC value.

colloidal structure of soap in water is completely disturbed.

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