Semester Exam - Set 4

Part A (20 x 2 = 40 Marks)

1. What are the advantages of Kraft pulp?
2. How do you obtain glucose from starch?
3. Why beating is required in the manufacture of pulp?
4. What are the uses of baggasse?
5. Name four industrial fermentation products
6. What are detergents?
7. What are the steps involved in the refining of edible oils?
8. What is meant by hydrogenation of oil?
9. Give the refinery crude petroleum classification
10. What is catalytic cracking?
11. What are the byproducts from natural gasoline?
12. Name two oil refineries in Tamil Nadu
13. How are plastics classified?
14. What are the ways by which polymerization takes place?
15. Mention few industrial applications of polymers
16. How silicon rubbers are made?
17. What is Neoprene?
18. Name any four dye-intermediates
19. Classify the dyes
20. Name two tanning processes in leather industry

Part B (5 x 12 = 60 Marks)

21. (a) Describe the manufacture of corn-starch with the help of flow diagram. Mention the uses of starch

Or

(b) Discuss the various gasification processes of coal with a diagram

22. (a) Describe the manufacture of industrial alcohol from molasses with the help of flow diagram

Or

(b) What are oils and fats? What are the methods available for the extraction of oils? Describe any one method in detail

23. (a) What is Sweetening? List the different sweetening treatments used in petroleum processing. Discuss any one method in detail

Or

(b) Describe the catalytic reforming process for the naphtha feed with a flow sheet

24. (a) What are plastics? What are the basic differences between thermoplastic and thermosetting resins? Give examples

Or

(b) Discuss the various methods of polymerization.

25. (a) Describe the viscose process for the manufacture of Rayon fiber indicating the steps involved in detail.

Or

(b) (i) Compare natural and synthetic rubbers

(ii) How is natural rubber prepared? What are it's important properties?