Assertion(A): Powdered substances are more effective adsorbents than their crystalline forms
Reason(R): Powdered substance has more surface area and the extent of adsorption increases with the increase of the surface area of the adsorbent.

1. Both assertion and reason are true, and the reason is the correct explanation of the assertion.

2. Both assertion and reason are true, but the reason is not the correct explanation of the assertion.

3. Assertion is true but the reason is false.

4. Assertion is false but the reason is true.
Subtopic:  Adsorption and Absorption |
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Assertion(A): Physisorption decrease with the increase in temperature.
Reason(R): Physisorption is exothermic in nature.

1. Both assertion and reason are true, and reason is the correct explanation of the assertion.

2. Both assertion and reason are true, but reason is not the correct explanation of the assertion.

3. Assertion is true but reason is false.

4. Assertion is false but reason is true.
Subtopic:  Adsorption and Absorption |
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Select the correct option based on statements below:

Assertion (A): Detergents with low CMC are more economical to use.
Reason (R): The cleansing action of detergents involves the formation of micelles. These are formed when the concentration of detergents becomes equal to CMC.
 
1. Both (A) and (R) are true and (R) is the correct explanation of (A).
2. Both (A) and (R) are true but (R) is not the correct explanation of (A).
3. (A) is true but (R) is false.
4. (A) is false but (R) is true.
Subtopic:  Colloidal Solution |
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Select the correct option based on statements below:

Assertion (A): The coagulation power of Al3+ is more than Na+.
Reason (R): Greater the valency of the flocculating ion added, the greater is its power to cause precipitation (Hardy-Schulze rule)
 
1. Both (A) and (R) are true and (R) is the correct explanation of (A).
2. Both (A) and (R) are true but (R) is not the correct explanation of (A).
3. (A) is true but (R) is false.
4. (A) is false but (R) is true.
Subtopic:  Colloidal Solution |
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Select the correct option based on statements below:

Assertion (A): Colloidal solutions do not show Brownian motion.
Reason (R): Brownian motion is responsible for the stability of sols.
 
1. Both (A) and (R) are true and (R) is the correct explanation of (A).
2. Both (A) and (R) are true but (R) is not the correct explanation of (A).
3. (A) is true but (R) is false.
4. (A) is false but (R) is true.
Subtopic:  Colloidal Solution |
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Select the correct option based on statements below:

Assertion (A): An ordinary filter paper impregnated with collodion solution stops the flow of colloidal particles.
Reason (R): The pore size of the filter paper becomes larger than the size of the colloidal particle.
 
1. Both (A) and (R) are true and (R) is the correct explanation of (A).
2. Both (A) and (R) are true but (R) is not the correct explanation of (A).
3. (A) is true but (R) is false.
4. (A) is false but (R) is true.

Subtopic:  Colloidal Solution |
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Given below are two statements:
I: In the coagulation of a negative sol, the flocculating power of the three given ions is in the order Al3+ > Ba2+ > Na+
II: In the coagulation of a positive sol, the flocculating power of the three given salts is in the order NaCl > Na2SO4 > Na3PO4
In the light of the above statements, choose the most appropriate answer from the options given below:
1. I is incorrect but II is correct.
2. Both I and II are correct.
3. Both I and II are incorrect.
4. I is correct but II is incorrect.
Subtopic:  Colloidal Solution |
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Which curve represents Freundlich's adsorption isotherm?

1.  2.
3. 4.
Subtopic:  Adsorption Isotherm |
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Consider the following graph between xm (extent of adsorption) and pressure:

What is the correct relation between T1, T2, and T3?

1. T3< T2 >T12. T1<T2 <T33. T1>T2 >T34. None of the above

Subtopic:  Adsorption Isotherm |
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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 |
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