The characteristics associated with adsorption are:

1. ∆G, ∆H, and ∆S are all negative.
2. ∆G and ∆H are negative, but ∆S is positive.
3. ∆G and ∆S are negative, but ∆H is positive.
4. ∆G is negative, but ∆H and ∆S are positive.

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.

Which one of the following statements about enzyme catalysis is incorrect?

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

The coagulation values in millimoles per litre of the electrolytes used for the coagulation of As₂S₃ are given below 
I. (NaCl) = 52, II. (BeCl₂) = 0.69, III. (MgSO₄) = 0.22 
What is the correct order of their coagulating power?
1. I > II > III
2. II > I >III
3. III > II > I
4. III > I >II

What happens during electro-osmosis of Fe(OH)₃ sol?

According to Freundlich adsorption isotherm, at high pressure, the value of $\frac{\mathrm{x}}{\mathrm{m}}$ 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.

Among the following options, the gas that will be more readily adsorbed on the surface of charcoal is:

1. $C{O}_2$             

2. $N{H}_3$               

3. ${\mathrm{Br}}_2$           

4. $N_2$