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.
In which of the sols, the colloidal particles are with a negative charge?
1. TiO2
2. Hemoglobin
3. Starch
4. Hydrated Al2O3
The equation that represents a Freundlich adsorption isotherm is:
1.
2.
3.
4.
Which one of the following forms micelles in the aqueous solution above a certain concentration:
1. Glucose
2. Urea
3. Dodecyl trimethyl ammonium chloride
4. Pyridinium chloride
At the critical micelle concentration (CMC) the surfactant molecules:
1. Associate
2. Dissociate
3. Decompose
4. Become completely soluble
According to Hardy Schulze law, the order of coagulation power of cations will be:
1.
2.
3.
4.
Which one of the following methods is commonly used method for destruction of colloid:
1. Dialysis
2. Condensation
3. Filtration by animal membrane
4. By adding electrolyte
Positions of the non-polar & polar parts in Micelle are:
1. | Polar at the outer surface but non-polar at the inner surface |
2. | Polar at the inner surface but non-polar at the outer surface |
3. | Distributed all over the surface |
4. | Present on the surface only |
Which of the following is correct:
1. Cycloheptane is an aromatic compound
2. Diastase is an enzyme
3. Acetophenone is an ether
4. All the above
Which statement is not correct regarding the adsorption of a gas on the surface of a solid:
1. | On increasing temperature adsorption increase continuously |
2. | Enthalpy & entropy change is negative |
3. | Adsorption is more for some specific substance |
4. | Reversible |