Page 1 CBSE TEST PAPER-02 CLASS - XII CHEMISTRY (Surface chemistry) Topic: Factors affecting adsorption, Application of adsorption , Homogeneous and hetrogeneous catalysis 1. Name the factors which influence the extent of adsorption of a gas on solid. [2] 2. What is adsorption isotherm? [1] 3. H ? for chemisorption is high .why? [1] 4. Explain Freundlich adsorption isotherm. [2] 5. Give an equation showing variation of extent of adsorption with concentration of a solution? [1] 6. Name the adsorbent used [3] a) To remove coloured impurities from sugar solution. b) In gas masks to remove chlorine. c) To remove moisture from air. 7. Define the terms – catalysis and catalyst. [2] 8. What are positive and negative catalysts? [1] 9. What do you mean by the term promoter? Give an example. [1] 10. What are homogeneous and heterogeneous catalysis? Give example. [3]Read More