Chemistry : Part I for Class XII
Surface Chemistry - 03

Instructions

1. All questions are compulsary.
2. Please give the explanation for the answer where applicable.
3. To view the answer, click on the Answer link alongside the Question.
You can view the answer when the link becomesGreen Red. on completion of allocated time.


Q.1) What is a hydrosol? (1 Marks) 

Q.2) Define peptization? (1 Marks) 

Q.3) Define Brownian movement? (1 Marks) 

Q.4) Differentiate between chemisorption and physisorption? (2 Marks) 

Q.5) How can a solid adsorbent be activated? (2 Marks) 

Q.6) How is langmuir adsorption isotherm superior to freundlich adsorption isotherm? (2 Marks) 

Q.7) How can ‘a’ & ‘b’ be calculated for langmuir adsorption isotherm: x/m = aP/1+bP? (2 Marks) 

Q.8) Differentiate between homogeneous and heterogeneous catalysis. Give one example for each. (3 Marks) 

Q.9) What are the important features of a solid catalyst? (3 Marks) 

Q.10) "Action of soap is due to emulsification and micelle formation". (3 Marks)