LOYOLA COLLEGE (AUTONOMOUS), CHENNAI – 600 034
B.Sc. DEGREE EXAMINATION – MATHEMATICS
SUPPLEMENTARY EXAMINATION – JUNE 2009
CH 2102 - GENERAL CHEMISTRY FOR PHYSICS & MATHEMATICS
Date & Time: 25/06/2009 / 10:00 - 1:00 Dept. No.
Max. : 100 Marks
PART-A
Answer ALL questions.
(10 x 2 = 20 )
1. Calculate the EAN and give the stability of following complexes.
(i) [Pt(NH3 )6]4+
(ii) [Ni(NH3 )6] 2+
2. Draw the structure of EDTA.
3. What are the conditions for the molecules to be optically active?
4. Why trimethyl amine less basic than dimethyl amine?
5. State Raoults law.
6. Name the catalysts used in Contact and Haber’s processes.
7. Draw the structure of the following (i) Adenine (ii) Cytosine
8. Give any two possible risks of genetic engineering.
9. What is meant by addition polymerization? Give an example.
10 How Neoprene is prepared? Give any two uses.
PART-B
Answer any EIGHT questions.
(8 x 5 = 40 )
11. Explain the postulates of valence bond theory.
12. Explain the structure and function of Hemoglobin
13. Discuss the (i) colour (ii) magnetic properties of transition elements
14. Write the mechanism of SN2 reaction with suitable example.
15. Discuss the optical isomers of lactic acid.
16. Briefly explain the critical solution temperature of phenol-water system.
17. Differentiate order and molecularity of a reaction.
18. Derive Arrhenius equation for the effect of temperature on rate of reactions.
19. Discuss the various types of RNA. Mention their importance.
20. Explain structure and functions of thyroxin.
21. Write a note on vulcanization of rubber.
22. How the following polymers are prepared and mention their uses.
(i) PVC
(ii) PUF
1
PART-C
Answer any FOUR questions
(4x10=40)
23.i) Discuss the postulates Werner’s theory of coordination compounds. (6 + 4)
ii) Draw the structure and write the names of possible isomers of
(a) [Cr(NH3)4Cl2]+ (b) [Co(en)2Cl2]+
24. i) Discuss the conformational analysis of cyclohexane.
(6 + 4)
ii) Give the mechanism of Friedel –crafts acylation of benzene.
25. Derive an expression for the rate constant of a second order reaction involving
two similar reactants.
(6 + 4)
ii) How pH can be determined using glass electrode.
26.(i) Sketch the phase diagram of Lead-Silver system and explain the important
features.
(7 + 3)
ii) State reduced phase rule.
27. Differentiate the characteristics of DNA and RNA with diagram.
ii) Mention the structure and functions of
a) Oxytocin
28. i) Give the electrochemical mechanism of corrosion.
ii) Write a note on
a) electroplating b) galvanization
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2
(5 + 5).
b) Adrenaline
(5 + 5)