Surface Chemistry Three Marks Questions

12th Standard EM

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Chemistry

Time : 01:00:00 Hrs
Total Marks : 50
    10 x 5 = 50
  1. Give three uses of emulsions.

  2. Why does bleeding stop by rubbing moist alum

  3. Why is desorption important for a substance to act as good catalyst?

  4. Comment on the statement: Colloid is not a substance but it is a state of substance.

  5. Explain any one method for coagulation

  6. Write a note on electro osmosis

  7. Write a note on catalytic poison

  8. Explain intermediate compound formation theory of catalysis with an example

  9. What is the difference between homogenous and hetrogenous catalysis?

  10. Describe adsorption theory of catalysis

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