The coagulating power of electrolytes with ions Na+, Al3+, and Ba2+for arsenic sulphide sol increases in the order :
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.
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. |
The equation that represents a Freundlich adsorption isotherm is:
1.
2.
3.
4.
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.
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.
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.