The equation that represents a Freundlich adsorption isotherm is:
1.
2.
3.
4.
A colloid of Agl is formed by mixing AgNO3 with an excess of Kl. The electrolyte with the greatest coagulation value for it is:
1.
2. NaCl
3.
4.
The coagulating power of electrolytes with ions Na+, Al3+, and Ba2+for arsenic sulphide sol increases in the order :
1.
2.
3.
4.
Among the following options, the gas that will be more readily adsorbed on the surface of charcoal is:
1.
2.
3.
4.
According to Freundlich adsorption isotherm, at high pressure, the value of is -
1. Directly proportional to the pressure.
2. Inversely proportional to the pressure.
3. Directly proportional to the square of the pressure.
4. Independent of the pressure.
What happens during electro-osmosis of Fe(OH)3 sol?
1. | Sol particles move towards the anode. |
2. | Sol particles move towards the cathode of a sol. |
3. | The higher the gold number, the greater will be the protective power of a lyophilic colloid. |
4. | The dispersion medium moves towards the anode. |
Select the correct option based on statements below:
Assertion (A): | A hydrophilic sol is more stable than a hydrophobic sol. |
Reason (R): | When compared to hydrophobic sol, colloidal particles in hydrophilic sol are heavily hydrated. |
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. | Both (A) and (R) are false. |
Select the correct option based on statements below:
Assertion (A): | One part of micelles is lyophilic in nature. |
Reason (R): | Micelles have a lyophillic COO group. |
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. | Both (A) and (R) are false. |
Brownian motion of colloidal particles is caused by:
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. | None of the above. |
On increasing the temperature:
1. The extent of adsorption increases in physisorption.
2. The extent of adsorption decreases in physisorption.
3. No effect on adsorption.
4. The extent of adsorption first decreases, then increases.