LOYOLA COLLEGE (AUTONOMOUS), CHENNAI600 034.
M.Sc. DEGREE EXAMINATION  CHEMISTRY
FOURTH SEMESTER  APRIL 2003
CH 4200/CHE 200 GENERAL CHEMISTRY FOR MATHS & PHYSICS
22.04.2002
9.00  12.00
Max: 100 Marks
PART  A
Answer ALL the questions.
(10  2 = 20 Marks)
01. Define Lattice energy.
02. State Kohlrausch’s law.
03. Draw the structure of glucose.
04. How does  - amino acid exist in acidic medium and alkaline medium?
05. What is Bordeaux mixture? What is it used for?
06. Mention two applications of radio isotopes in medicine.
07. What are antipyretics? Give one example.
08. What happens when anthracene is brominated?
09. What are mordants?
10. Acetic acid in benzene exists as a dimer  Explain.
PART  B
Answer any EIGHT questions
11. Write a note on carcinogenic hydrocarbon.
(8  5 = 40 Marks)
12. How is congo red prepared?
13. Explain the mode of action of sulpha drug.
14. How is anthracene isolated from coal tar?
15. How are the following prepared?
(i) Malachite green (ii) aspirin
16. Derive Kirchoff’s equation
17. Draw the conductometric titration curves for the following and explain.
(i) HCl vs NaOH
(ii) CH3 COOH Vs NaOH
18. Discuss the factors affecting enzyme catalysis.
19. Write a note on photosynthesis.
20. Explain the features of nuclear fission reaction.
21. Explain the construction of calomel electrode. What is the electrode reaction?
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PART  C
(4  10 = 40 Marks)
Answer any FOUR questions
22. Construct Born Haber cycle for NaCl(s). Mention the terms involved.
23. a) Discuss the primary structure of proteins.
b) Write a note on herbicides
24. a) Explain the role of micronutrients in the growth of plants
b) What is the role of enzyme in enzyme catalysis?
(5)
(5)
(5)
(5)
25. How is the dissociation constant of acetic acid determined using conductivity
measurement?
26. a) How are lanthanides separated by ionexchange method?
(6)
b) Physical properties of compounds are affected by Hbonding  Explain
with two examples.
(4)
27. a) What are chromophores and auxochromes? Give examples.
(5)
b) How are the following conversions effected?
(i)Pyrrole to 2nitro pyrrole. (ii) Pyrrole to Pyrolle-2aldehyde
(5)
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