According to Hardy Schulze law, the order of coagulation power of cations will be:
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
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 |
At the critical micelle concentration (CMC) the surfactant molecules:
1. Associate
2. Dissociate
3. Decompose
4. Become completely soluble
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 |
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
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
According to the adsorption theory of catalysis, the speed of the reaction increase because:
1. | The concentration of reactant molecules at the active centers of the catalyst becomes high due to adsorption |
2. | In the process of adsorption, the activation energy of the molecules becomes large |
3. | Adsorption produces heat which increases the speed of the reaction |
4. | Adsorption lowers the activation energy of the reaction |