LOYOLA COLLEGE (AUTONOMOUS), CHENNAI – 600 034 LOYOLA COLLEGE (AUTONOMOUS), CHENNAI – 600 034B.Sc. DEGREE EXAMINATION – MATHEMATICS & PHYSICSSECOND SEMESTER – APRIL 2008CH 2102 – GENERAL CHEMISTRY FOR PHYSICS & MATHS (Also Equal CH 2100/3100)
Date : 25/04/2008 Dept. No. Max. : 100 Marks Time : 1:00 – 4:00 PART-A Answer ALL the questions (10 × 2 = 20)1. Write the IUPAC nomenclature for the following complexes.a. [Co(en)2Cl2]+ b. K4[Fe(CN)6]2. Why the transition metal ions are coloured?3. Which type of substitution reaction do the primary alkyl halides undergo? Give reason.4. Tertiary amines are comparatively less basic than secondary amines. Give reason.5. Calculate the degrees of freedom for the following reaction. CaCO3(s) ⇌ CaO(s)+ CO2(g)6. State Beer-Lambert’s law.7. Draw the structure of thyroxine and mention any two functions.8. Mention the functions of different types of RNA.9. How is Neoprene prepared?10. What are the drawbacks of crude natural rubber?PATR-B Answer any EIGHT questions (8 × 5 = 40)11. Draw the structure of haemoglobin and explain its role in blood.12. Predict the hybridization and geometry of the following complexes.a. [Fe(CO)5] b. [Ni(NH3)6]2+13. How is hardness of water determined using EDTA method?14. Discuss the conformation of cyclohexane.15. Predict the product and give its mechanism
16. Derive the rate constant of first order reaction.17. Distinguish between thermal and photochemical reactions.18. Write briefly on Pattinson’s process.19. Differentiate between DNA and RNA.20. Write the structure and functions of adrenaline and oxytocin.21. How do you prepare the following polymers?a. PUF b. Terylene22. Differentiate the following with suitable examples.a. Step growth and Chain growth polymerization.b. Thermoplastic and Thermosetting plastics.
PART-CAnswer any FOUR questions (4×10=40)23. a ) How many geometrical isomers are possible for [Co(en)2(NH3)Cl]2+? Draw their structures.b ) Predict the magnetic nature of the following complexes.(i) [Ni(CN)4]2- (ii) [Co(NH3)6]3+24. a ) Discuss the mechanism of SN1 reaction.b ) Explain the optical isomerism of tartaric acid.25. a ) Arrange the following molecules based on acidity.(i)
b ) Explain the deviation of solution from its ideal behavior.26. State and apply the phase rule to one component system.27. a ) Mention any four applications and two possible risk of genetic engineering.b ) Explain the Watson and Crick model of DNA.28. a ) How do you prevent corrosion by cathodic protection ?b ) Explain vulcanization of rubber. Mention its uses.
* * * * *
Latest Govt Job & Exam Updates: