In which of the sols, the colloidal particles are with a negative charge?

1. TiO₂

2. Hemoglobin

3. Starch

4. Hydrated Al₂O₃

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. $N{a}^{+}$ $>$ $B{a}^{+2}$ $$ $>$ $A{l}^{+3}$

2.  $A{l}^{+3}$ $>$ $B{a}^{+2}$ $$ $>$ $N{a}^{+}$

3.  $B{a}^{+2}$ $>$ $A{l}^{+3}$ $$ $>$ $N{a}^{+}$

4. $$ $A{l}^{+3}$ $$ $>$ $N{a}^{+}>$ $B{a}^{+2}$ $$

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:

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:

According to the adsorption theory of catalysis, the speed of the reaction increase because:

The right option for the statement "Tyndall effect is exhibited by", is:

1. Starch solution 

2. Urea solution

3. NaCl solution

4. Glucose solution