LOYOLA COLLEGE (AUTONOMOUS), CHENNAI – 600 034

SUPPLEMENTARY SEMESTER EXAMINATION – JUN 2006

B.Sc. DEGREE EXAMINATION

                               CH 3200 – GENERAL CHEMISTRY FOR PHYSICS & MATHS

 

 

 

Date & Time : 28/06/2006/9.00 – 12.00        Dept. No.                                                       Max. : 100 Marks

 

 

PART-A                                                                      

   Answer all questions                                                                                        (10×2=20)

1. What principle is used in the separation of o-nitrophenol and p-nitrophenol?
2. Draw any two structures of aromatic polycyclic hydrocarbons.
3. What are chromosphores? Give an example.
4. Write any two uses of aspirin.
5. State Hess’s law.
6. What is a zwitter ion? Give an example.
7. How is glycine synthesized from a-chloroacetic acid?
8. State I law of thermodynamics.
9. Give any two examples for radioisotopes.
10. How is BHC prepared?

PART-B

   Answer any eight questions.                                                                           (8×5=40)

11. Explain the origin of hydrogen bonding using the theory of dipole-dipole interaction.
12. What is lanthanide contraction? Explain.
13. Write the mechanism of nitration of naphthalene.
14. Explain any three electrophilic substitution reactions of furan.
15. Draw the structure of penicillin and give any three uses of the same.
16. Define the following term:
17. a) enthalpy of formation            b) enthalpy of neutralization      c) EMF
18. Write a note on primary electrode.
19. Derive Kirchoff’s equation.
20. Draw and explain saturated calomel electrode.
21. Discuss the structure of glucose.
22. Write a note on a) calorific value of fuel     b) octane number.
23. How is urea synthesized?

 

PART-C

Answer any four questions.                                                                         (4×10=40)

23. Discuss in details Born-Haber cycle for calculating lattice energy.
24. a) Explain the Haworth synthesis of naphthalene. (5)
25. b) Explain any one method of preparation of pyrrole.                                      (5)
26. a) Write short notes on sulpha drugs. (4)
27. b) Discuss the different types of conductometric titrations. (6)
28. a) What is equivalent conductance? How is it determined? (5)
29. b) Explain Sanger’s method for the determination of N-terminal group of proteins
30. a) What are the factors influencing the activity of enzymes. (5)
31. b) Explain the primary structure of proteins.
32. Discuss the salient features of fractional distillation of petroleum. (10)

 

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