Sathyabama University 2008 B.Tech Chemical Engineering Organic Chemical Technology - Question Paper
SATHYABAMA UNIVERSITY
(Established under section 3 of UGC Act, 1956)
Course & Branch: B. Tech Chemical (Part Time)
Title of the paper: Organic Chemical Technology
Semester: III Max. Marks: 80
Sub.Code: 619PT301 (2007) Time: 3 Hours
Date: 21-04-2008 Session: FN
PART A (10 x 2 = 20)
Answer All the Questions
1. What are the raw materials used in paper industry?
2. What is amylopectin?
3. What is fermentation?
4. Define saponification number of an oil.
5. What is meant by the term cracking?
6. All coking coals are caking coals but all caking coals are not coking coal. Justify this statement.
7. Why is PVC generally plasticized?
8. What is natural rubber? Give examples.
9. How is polyester prepared?
10. Define chromophore. Give two examples.
PART B (5 x 12 = 60)
Answer All the Questions
11. Outline the preparation, properties and structure of sucrose.
(or)
12. Explain the various stages involved in the manufacture of newsprint and writing papers.
13. Explain the role of anti-biotic in human health.
(or)
14. What are detergents? How are they obtained? In what way they are superior to soaps? Illustrate with one example.
15. What is implied by the term Refining of petroleum? What are the various fractions obtained by the factional distillation of petroleum? Give one use of each.
(or)
16. What is coal gas? Give its composition. How is it prepared on large scale? What are uses?
17. Describe the method of preparation, properties and applications of the following. (3 x 4 = 12)
(a) Teflon (PTFE)
(b) PVC
(c) Epoxy resins
(d) Polyethylene
(or)
18. Describe the preparation and uses of the following. (3 x 4 = 12)
(a) Styrene-butadiene rubber (SBR)
(b) Silicon rubber
(c) Polybutadiene
(d) Polychloroprene
19. Describe the preparation of rayon by viscose process and its properties.
(or)
20. Give the synthesis and uses of
(a) Malachite green (4)
(b) Congo red (5)
(c) Methyl orange (3)
| Earning: Approval pending. |
