(Paper) Chemistry : Part I for Class XII (Surface Chemistry - 02 )

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Chemistry : Part I for Class XII
Surface Chemistry - 02



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 do x and m represent in the expression x/m=kp1/n (1 Marks) 

Q.2) Why is heterogeneous catalysis also known as surface catalysis? (1 Marks) 

Q.3) What is meant by activation of an adsorbent? (1 Marks) 

Q.4) Give any four factors on which adsorption of a gas on a solid depends? (3 Marks) 

Q.5) What are the steps involved in the enzyme catalyzed reactions? (2 Marks) 

Q.6) What are lyophilic and lyophobic solutions? Give examples for each. (3 Marks) 

Q.7) How are micelles formed in soap solution? (2 Marks) 

Q.8) How can lyophobic sols be prepared by mechanical disintegration? (2 Marks) 

Q.9) Differentiate between electrophoresis and electro-osmosis? (2 Marks) 

Q.10) What are macromolecular and multimolecular colloids? How are they different from associated colloids? (3 Marks)