The phenomenon of the scattering of light by a colloidal solution known as:

1. Zeeman effect.

2. Tyndall effect.

3. Electrophoresis.

4. None of the above.

Subtopic:  Colloidal Solution |
 96%
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The coagulating power of electrolytes with ions Na+,  Al3+, and Ba2+ rise for arsenic sulphide sol increases in the order :

1. Al3Ba2Na+

2. NaBa2Al3+

3. Ba2NaAl3+

4. Al3NaBa2+

Subtopic:  Colloidal Solution |
 88%
From NCERT
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Which of the following electrolytes, Na2SO4, CaCl2, Al2(SO4)3, and NH4Cl, is the most effective coagulating agent for Sb2S3 sol?

1. Na2SO4                             

2. CaCl2

3. Al2(SO4)3                           

4. NH4Cl

Subtopic:  Colloidal Solution |
 87%
From NCERT
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Cloud bursts are caused by?

1. Attraction towards the electrical charges on the earth.
2. Large amount of water present in the cloud.
3. Dense clouds are present in the upper atmosphere.
4. Mutual discharge of oppositely charged clouds resulting in the coagulation.
Subtopic:  Colloidal Solution |
 83%
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The correct match amongst the following is -

Physical states of the dispersed phase and dispersion medium Type of colloid
a. D.P = solid; D.M = liquid  i. Foam
b. D.P = solid; D.M = gas ii. Emulsion
c. D.P = liquid; D.M = liquid  iii. Aerosol
d. D.P = gas; D.M = liquid  iv. Sol

(D.P = dispersed phase, and D.M = dispersion medium)

Options:

a b c d
1. iv iii ii i
2. iii iv ii i
3. iv ii iii i
4. i iii ii iv
Subtopic:  Colloidal Solution |
 81%
From NCERT
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The coagulating power of an ion depends on:
 

1. The magnitude of the charge on the ion alone
2. Size of the ion alone
3. Both magnitude and sign of the charge on the ion.
4. The sign of the charge on the ion alone.

Subtopic:  Colloidal Solution |
 78%
From NCERT
NEET - 2018
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Measuring Zeta potential is useful in determining which of the following property of a colloidal solution:

1. Solubility.

2. Stability of the colloidal particles.

3. Size of the colloidal particles.

4. Viscosity.

Subtopic:  Colloidal Solution |
 78%
From NCERT
NEET - 2020
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The method of formation of the solution is given in Column I. Match it with the type of solution given in Column II.

Column I Column II
(A) Sulphur vapours passed through cold water 1. Normal electrolyte solution
(B) Soap mixed with water above critical micelle concentration 2. Molecular colloids
(C) White of egg whipped with water 3. Associated colloid
(D) Soap mixed with water below critical micelle concentration 4. Macromolecular colloids

Codes

A B C D
1. 2 3 4 1
2. 1 2 3 4
3. 1 4 3 2
4. 4 1 3 2
Subtopic:  Colloidal Solution |
 74%
From NCERT
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How can alum help in water purification?

1. Forming Si complex with clay particles.
2. The sulphate part, which combines with the dirt and removes it.
3. Aluminium which coagulates the mud particles.
4. Making mud water soluble.
Subtopic:  Colloidal Solution |
 70%
From NCERT
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Match the statement given in Column I with the phenomenon given in Column II.

Column I Column II
A. Dispersion medium moves in an electric field 1. Osmosis
B. Solvent molecules pass through a semi-permeable membrane towards the solvent side 2. Electrophoresis
C. Movement of charged colloidal particles under the influence of applied electric potential towards oppositely charged electrodes 3. Electroosmosis
D. Solvent molecules pass through semi-permeable membranes towards the solution side 4. Reverse osmosis

Codes

A B C D
1. 2 3 4 1
2. 1 2 3 4
3. 3 4 2 1
4. 4 1 3 2
Subtopic:  Colloidal Solution |
 69%
From NCERT
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