A two phase system consisting of a liquid dispersed in another liquid is known as-

1. Foam 

2. Suspension

3. Emulsion

4. Mist

A liquid aerosol is a colloidal system of:

1. a liquid dispersed in a solid

2. a liquid dispersed in a gas

3. a gas dispersed in a liquid

4. a solid dispersed in a gas

A negative catalyst or inhibitor is one:

1. which retards the rate of reaction

2. takes the reaction in forward direction

3. promotes the side reaction

4. None of the above

Clouds, mist, fog and aerosols are colloidal solution of:

1. solid in a gas

2. gas in a solid

3. liquid in a gas

4. gas in a liquid

What is the simultaneous outcome of internal liquid from gels called?

1. Synerisis                         

2. Thixotropy

3. Swelling                           

4. None of the above

The charge on As₂S₃ sol is caused by the adsorption of:

1. H⁺                             

2. OH^-

3. ${\mathrm{O}}_2^{-}$                             

4. S^2-

Pd can adsorb 900 times its volume of hydrogen. This called:

1. Absorption

2. Adsorption

3. Occlusion

4. Both 2, and 3

The Brownian motion is due to:

(1)temperature fluctuations within the liquid phase

(2)attraction and repulsion between charges on the colloidal particles

(3)impact of the molecules of the dispersion medium on the colloidal particles

(4)convective currents

The phenomenon in which adsorption and absorption takes place simultaneously is called:

1. Desorption                       

2. Sorption

3. Both 1 and 2              

4. None of these

Peptization is the process of?

1. Precipitating colloidal particles.

2. Purifying colloidal particles.

3. Dispersing the precipitate into a colloidal state.

4. None of the above.