LOYOLA COLLEGE (AUTONOMOUS), CHENNAI – 600 034
B.Sc. DEGREE EXAMINATION – MATHEMATICS
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THIRD SEMESTER – NOV 2006
CH 3200 – GENERAL CHEMISTRY FOR PHYSICS & MATHS
Date & Time : 31-10-2006/9.00-12.00 Dept. No. Max. : 100 Marks
PART- A (10×2=20)
Answer ALL the questions.
- What is mutarotation?
- What are essential and non essential amino acids? Give an example.
- What are chromophore? Give examples.
- Why is pyridine more basic than pyrrole?
- State the first law of themodynamics.
- Write a note on photosynthesis.
- What is a peptide – linkage? Give an example for a dipeptide.
- Distinguish between intensive and extensive properties.
- Define enthalphy of neutralisation.
- What are antipyritics? Give an example.
PART- B (8×5=40)
Answer any EIGHT questions.
- Explain the formation of a & b anomers of glucose.
- Explain any one theory of colour and constitution of dyes.
- Explain the preparation and uses of sulphanilamide.
- What is nuclear fussion? Explain its importance.
- Write a short notes on calomel electrode.
- How are amino acids synthesised by Gabriel synthesis?
- How is malachite green prepared? Give its uses.
- Explain any one theory of hydrogen bonding.
- a) What is Bordeaux mixture?
- b) Draw the structure of BHC.
- Explain standard hydrogen electrode.
- Write a note on (a) Direct dyes
(b) Vat dyes
- Explain Kohlrausch’s law with an example.
PART- C (4×10=40)
Answer any FOUR questions.
- Draw the Born – Haber cycle for sodium chloride and mention its terms. (10)
- a) What is lanthanide contraction? (4)
- b) Explain the ion exchange method for the separation of lanthanides. (6)
- Discuss the structure of proteins. (10)
- Elucidate the structure of fructose. (10)
- a) Explain the Haworth synthesis of anthracene. (5)
- b) How is pyrrole synthesised? How does it react with the con. nitric acid in acetic anhydride? (5)
- a) Explain the role of micronutrients. (5)
- b) How are the following prepared? (a) urea (b) Triple superphosphate. (5)
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