LOYOLA COLLEGE (AUTONOMOUS), CHENNAI – 600 034

DB 05

   B.Sc. DEGREE EXAMINATION – MATHS & PHYSICS

THIRD SEMESTER – November 2008

CH 3202 / 3200 – ADV. GENERAL CHEMISTRY FOR PHYS.& MATHS

 

 

 

Date : 13-11-08                     Dept. No.                                        Max. : 100 Marks

Time : 9:00 – 12:00

PART-A

Answer all the questions                                                                           (10×2= 20)

 

1. Mention any two methods involved in the detection of hydrogen bonding?
2. H₂O has a higher boiling point than H₂S. Justify.

3. Define lattice energy.
4. Give a method of preparation of pyrrole.
5. Define Internal energy.
6. What is solubility product?
7. How is energy transformed in photosynthesis reaction?
8. What are transferases? Give an example.
9. Differentiate renewable sources from non renewable sources of energy.
10. Mention two advantages of mixed fertilizers.

PART-B

Answer any eight questions                                                                      (8×5= 40)

11. Discuss lanthanide contraction giving causes and its consequences.
12. How are the following prepared? Give equations. a) Congo red b) Malachite green.
13. Give a synthetic method of preparation and uses of asprin.
14. Write any one method of preparation of furan and explain the nitration of furan with example.
15. Discuss the classification of dyes based on their structure.
16. How is (a) pyridine converted to 2- nitro pyridine and (b) pyrrole to pyrrole-2-aldehyde
17. What are broad spectrum antibiotics? Give two examples with uses.
18. What are carbohydrates? How are they classified?
19. Describe Sanger’s method for the sequential determination of amino acid.
20. What are enzymes? Give any four properties of enzymes.
21. Write short notes on thermal cracking and catalytic cracking of liquid fuels.
22. Mention any four functions each for macro and micro nutrients in plants growth.

PART-C

Answer any four questions                                                                      (4×10= 40)

23. i) Define hydrogen bonding. Explain the two types of hydrogen bonding with example. (7)
24. ii) Why do ice float on water? (3)
25. i)Explain the working principle of secondary reference electrode.(5)
26. ii) How is naphthalene prepared by Haworth synthesis? (5)
27. i) What are the factors affecting lattice energy? (5)
28. ii) Derive the variation of enthalpy of reaction with temperature.(5)
29. i) Draw and explain the working principle of calomel electrode. (6)
30. ii) Explain Hess’s law. (4)
31. i) Establish the open chain formula of fructose. (7)
32. ii) Discuss the secondary structure of protein in detail. (3)
33. Explain any two of the following. (5+5)
34. a) Nuclear fusion b)  Herbicides   c) Phosphatic fertilizers  d) Fungicides

 

 

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