5HA - Organic Chemical Technology - October 1998

Part A (20 x 2 = 40 Marks)

  1. Name the machine used for making paper from wet pulp
  2. Why raw sugar is to be refined?
  3. What is viscous rayon?
  4. What are the main products of coal gasification?
  5. List two examples of fermentation products and their sources
  6. What are surfactants?
  7. Indicate one route for getting synthetic glycerin
  8. What are antibiotics?
  9. What are the general constituents of crude petroleum?
  10. What are the main petroleum refinery fractions?
  11. What is hydroforming?
  12. Name a few important large-scale petrochemicals that can be obtained from benzene
  13. Give an example of a monomer and its corresponding polymer
  14. Distinguish addition and condensation polymerization?
  15. What is emulsion polymerization?
  16. Name two thermoplastics
  17. What is Teflon and where it is mainly used?
  18. What are the main properties of a fiber?
  19. What are polyurethanes?
  20. Name two dye intermediates

    21. Part B (5 x 12 = 60 Marks)

  21. (a) Discuss the different methods of preparing pulp and compare them

    22. Or

    (b) With a neat flow diagram explain the manufacture of starch from corn

  22. (a) Describe the manufacture of citric acid from crude sugar

    23. Or

    (b) Illustrate with a flow sheet how detergents are produced

  23. (a) Classify as per the order of their cuts, the various petroleum products obtained from crude petroleum with their uses

    24. Or

    (b) Describe with a flow chart, the production of Benzene from petroleum naphtha

  24. (a) Discuss with examples the different types of polymers

    25. Or

    (b) Explain with a flow sheet the production of phenol-formaldehyde resin

  25. (a) Explain with a flow chart the manufacture of polyester fibers

    26. Or

    (b) Discuss the different synthetic rubbers with their specific properties and uses.


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