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.

Select the correct option based on statements below:

Brownian motion of colloidal particles is caused by:

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.

How can alum help in water purification?

The coagulating power of electrolytes with ions Na⁺,  Al³⁺, and Ba²⁺${rise\hspace{0.17em}}^{}$for arsenic sulphide sol increases in the order :

1. $A{l}^{3+\hspace{0.17em}}<\hspace{0.17em}B{a}^{2+\hspace{0.17em}}<\hspace{0.17em}N{a}^{+}$

2. $N{a}^{+\hspace{0.17em}}<\hspace{0.17em}B{a}^{2+\hspace{0.17em}}<\hspace{0.17em}A{l}^{3+}$

3. $B{a}^{2+\hspace{0.17em}}<\hspace{0.17em}N{a}^{+\hspace{0.17em}}<\hspace{0.17em}A{l}^{3+}$

4. $A{l}^{3+\hspace{0.17em}}<\hspace{0.17em}N{a}^{+\hspace{0.17em}}<\hspace{0.17em}B{a}^{2+}$

The equation that represents a Freundlich adsorption isotherm is: 

1. $\frac{x}{m}=k{p}^{0.3}$

2. $\frac{x}{m}=k{p}^{2.5}$

3. $\frac{x}{m}=k{p}^{-0.5}$

4. $\frac{x}{m}=k{p}^{-1}$

The correct curve for Freundlich's adsorption isotherm is:

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

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.