Directions: In the following questions, A statement of Assertion (A) is followed by a statement of Reason (R). Mark the correct choice as. Assertion (A): Extent of adsorption of adsorbate from solution phase increases with increase in amount of adsorbate in solution. Reason (R): Freundlich’s equation describes the behaviour of adsorption from a solution.

Both A and R are true and R is the correct explanation of A

Both A and R are true but R is NOT the correct explanation of A

Directions: In the following questions, A statement of Assertion (A) is followed by a statement of Reason (R). Mark the correct choice as. Assertion (A): Extent of physisorption of a gas increases with decrease in temperature. Reason (R): It is due to decrease in strength of van der Waals forces.

Both A and R are true and R is the correct explanation of A

Both A and R are true but R is NOT the correct explanation of A

Directions: In the following questions, A statement of Assertion (A) is followed by a statement of Reason (R). Mark the correct choice as. Assertion (A): At the equilibrium position in the process of adsorption ∆H = T∆S. Reason (R): Adsorption is accompanied by decrease in surface energy.

Both A and R are true and R is the correct explanation of A

Both A and R are true but R is NOT the correct explanation of A

Directions: In the following questions, A statement of Assertion (A) is followed by a statement of Reason (R). Mark the correct choice as. Assertion (A): Activated adsorption is also known as chemical adsorption or chemisorption. Reason (R): It involves formation of chemical bonds between adsorbent and reactants.

Both A and R are true and R is the correct explanation of A

Both A and R are true but R is NOT the correct explanation of A

Directions: In the following questions, A statement of Assertion (A) is followed by a statement of Reason (R). Mark the correct choice as. Assertion (A): An ordinary filter paper impregnated with collodion solution stops the flow of colloidal particles. Reason (R): Pore size of the filter paper becomes more than the size of colloidal particle.

Both A and R are true and R is the correct explanation of A

Both A and R are true but R is NOT the correct explanation of A

Directions: In the following questions, A statement of Assertion (A) is followed by a statement of Reason (R). Mark the correct choice as. Assertion (A): Detergents with low CMC are more economical to use. Reason (R): Cleansing action of detergents involves the formation of micelles. These are formed when the concentration of detergents becomes equal to CMC.

Both A and R are true and R is the correct explanation of A

Both A and R are true but R is NOT the correct explanation of A

Directions: In the following questions, A statement of Assertion (A) is followed by a statement of Reason (R). Mark the correct choice as. Assertion (A): Colloidal solutions do not show Brownian motion. Reason (R): Brownian motion is responsible for stability of sols.

Both A and R are true and R is the correct explanation of A

Both A and R are true but R is NOT the correct explanation of A

Directions: In the following questions, A statement of Assertion (A) is followed by a statement of Reason (R). Mark the correct choice as. Assertion (A): Coagulation power of Al 3+ is more than Na + . Reason (R): Greater the valency of the flocculating ion added, greater is its power to cause precipitation (Hardy-Schulze rule).

Both A and R are true and R is the correct explanation of A

Both A and R are true but R is NOT the correct explanation of A

Directions: In the following questions, A statement of Assertion (A) is followed by a statement of Reason (R). Mark the correct choice as. Assertion (A): Colloidal solutions show colligative properties. Reason (R): Colloidal particles are large in size.

Both A and R are true and R is the correct explanation of A

Both A and R are true but R is NOT the correct explanation of A

Directions: In the following questions, A statement of Assertion (A) is followed by a statement of Reason (R). Mark the correct choice as. Assertion (A): Colloids are stable. Reason (R): Brownian movement has a stirring effect, which does not allow the particles to settle.

Both A and R are true and R is the correct explanation of A

Both A and R are true but R is NOT the correct explanation of A

Directions: These questions consist of two statements, each printed as Assertion and Reason. While answering these questions, you are required to choose any one of the following four responses. Assertion: Detergents with low CMC are more economical to use. Reason: Cleansing action of detergents involves the formation of micelles. These are formed when the concentration of detergents becomes equal to CMC.

If both Assertion and Reason are correct and the Reason is a correct explanation of the Assertion.

If both Assertion and Reason are correct but Reason is not a correct explanation of the Assertion.

If the Assertion is correct but Reason is incorrect.

If both the Assertion and Reason are incorrect.

Directions: These questions consist of two statements, each printed as Assertion and Reason. While answering these questions, you are required to choose any one of the following four responses. Assertion : The value of colligative properties are of small order for colloids as compared to true solution. Reason : Number of particles in colloidal solution is comparatively smaller than true solutions.

If both Assertion and Reason are correct and the Reason is a correct explanation of the Assertion.

If both Assertion and Reason are correct but Reason is not a correct explanation of the Assertion.

If the Assertion is correct but Reason is incorrect.

If both the Assertion and Reason are incorrect.

Assertion and Reason Test: Surface Chemistry (Old NCERT) Free MCQ Practice Test with Solutions

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