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. |
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.
Which mixture of the solutions will lead to the formation of a negatively charged colloidal [AgI]I- sol?
1. 50 mL of 0.1 M AgNO3 + 50 mL of 0.1 M KI
2. 50 mL of 1 M AgNO3 + 50 mL of 0.5 M KI
3. 50 mL of 1 M AgNO3 + 50 mL of 2 M KI
4. 50 mL of 2 M AgNO3 + 50 mL of 1.5 M KI
Which one of the following statements about enzyme catalysis is incorrect?
1. | Enzymes are mostly proteinous in nature. |
2. | Enzyme action is specific. |
3. | Enzymes are denaturized by ultraviolet rays at high temperatures. |
4. | Enzymes are least reactive at an optimum temperature. |
In the Freundlich adsorption isotherm, the value of 1/n is:
1. Between 0 and 1 in all cases.
2. Between 2 and 4 in all cases.
3. 1 in the case of physical adsorption.
4. 1 in the case of chemisorption.