This chapter is currently out of syllabus
1
JEE Main 2021 (Online) 26th August Evening Shift
MCQ (Single Correct Answer)
+4
-1
Out of Syllabus
Change Language
The sol given below with negatively charged colloidal particles is :
A
FeCl3 added to hot water
B
KI added to AgNO3 solution
C
AgNO3 added to KI solution
D
Al2O3.xH2O in water
2
JEE Main 2021 (Online) 26th August Morning Shift
MCQ (Single Correct Answer)
+4
-1
Out of Syllabus
Change Language
Which one of the following is correct for the adsorption of a gas at a given temperature on a solid surface?
A
$$\Delta$$H > 0, $$\Delta$$S > 0
B
$$\Delta$$H > 0, $$\Delta$$S < 0
C
$$\Delta$$H < 0, $$\Delta$$S < 0
D
$$\Delta$$H < 0, $$\Delta$$S > 0
3
JEE Main 2021 (Online) 25th July Evening Shift
MCQ (Single Correct Answer)
+4
-1
Out of Syllabus
Change Language
Match List I with List II :

List-I
Example of colloids
List - II
Classification
(a) Cheese (i) dispersion of liquid in liquid
(b) Pumice stone (ii) dispersion of liquid in gas
(c) Hair cream (iii) dispersion of gas in solid
(d) Cloud (iv) dispersion of liquid in solid

Choose the most appropriate answer from the options given below
A
(a)-(iv), (b)-(iii), (c)-(ii), (d)-(i)
B
(a)-(iv), (b)-(i), (c)-(iii), (d)-(ii)
C
(a)-(iii), (b)-(iv), (c)-(i), (d)-(ii)
D
(a)-(iv), (b)-(iii), (c)-(i), (d)-(ii)
4
JEE Main 2021 (Online) 20th July Morning Shift
MCQ (Single Correct Answer)
+4
-1
Out of Syllabus
Change Language
The conditions given below are in the context of observing Tyndall effect in colloidal solutions :

(A) The diameter of the colloidal particles is comparable to the wavelength of light used.

(B) The diameter of the colloidal particles is much smaller than the wavelength of light used.

(C) The diameter of the colloidal particles is much larger than the wavelength of light used.

(D) The refractive indices of the dispersed phase and the dispersion medium are comparable.

(E) The dispersed phase has a very different refractive index from the dispersion medium.

Choose the most appropriate conditions from the options given below :
A
(A) and (E) only
B
(C) and (D) only
C
(A) and (D) only
D
(B) and (E) only
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