Excercise 1 Question 2
Why does physisorption decrease with the increase of temperature

Excercise 1 Question 3
Why are powdered substances more effective adsorbents than their crystalline forms?

Excercise 1 Question 4
Why is it necessary to remove CO when ammonia is obtained by Haber's process?

Excercise 1 Question 5
Why is the ester hydrolysis slow in the beginning and becomes faster after sometime?

Excercise 1 Question 6
What is the role of desorption in the process of catalysis?

Exercise 1 Question 7
What modification can you suggest in the Hardy-Schulze law?

Excercise 1 Question 8
Why is it essential to wash the precipitate with water before estimating it quantitatively?

Exercise 2 Question 2
What is the difference between physisorption and chemisorption?

Exercise 2 Question 4
What are the factors which influence the adsorption of a gas on a solid?

Exercise 2 Question 5
What is an adsorption isotherm? Describe Freundlich adsorption isotherm.

Exercise 2 Question 6
What do you understand by activation of adsorbent? How is it achieved?

Exercise 2 Question 7
What role does adsorption play in heterogeneous catalysis?

Exercise 2 Question 8
Why is adsorption always exothermic?

Exercise 2 Question 9
How are the colloidal solutions classified on the basis of physical states of the dispersed phase and dispersion medium?

Exercise 2 Question 11
What are lyophilic and lyophobic sols? Give one example of each type. Why are hydrophobic sols easily coagulated?

Exercise 2 Question 12 

What is the difference between multimolecular and macromolecular colloids? Give one example of each. How are associated colloids different from these two types of colloids?

Exercise 2 Question 13
What are enzymes? Write in brief the mechanism of enzyme catalysis.

Exercise 2 Question 14
How are colloids classified on the basis of
(i) Physical states of components
(ii) Nature of dispersion medium and
(iii) Interaction between dispersed phase and dispersion medium?

Exercise 2 Question 15
Explain what is observed
(i) When a beam of light is passed through a colloidal sol.
(ii) An electrolyte, NaCl is added to hydrated ferric oxide sol.
(iii) Electric current is passed through a colloidal sol?

Exercise 2 Question 16 

What are emulsions? What are their different types? Give example of each type.

Exercise 2 Question 17
What is demulsification? Name two demulsifiers.

Exercise 2 Question 20
What do you mean by activity and selectivity of catalysts?

Exercise 2 Question 22
What is shape selective catalysis?

Exercise 2 Question 23
Explain the following terms:
(i) Electrophoresis
(ii) Coagulation
(iii) Dialysis
(iv) Tyndall effect.

Question 25
What are micelles? Give an example of a micellers system.

Exercise 2 Question 26
Explain the terms with suitable examples:
(i) Alcosol
(ii) Aerosol
(iii) Hydrosol