Loyola College B.Sc. Chemistry April 2006 General Chemistry For Physics & Maths Question Paper PDF Download

             LOYOLA COLLEGE (AUTONOMOUS), CHENNAI – 600 034

B.Sc. DEGREE EXAMINATION – PHYSICS & MATHEMATICS

LM 03

SECOND SEMESTER – APRIL 2006

                               CH 2100 – GENERAL CHEMISTRY FOR PHYSICS & MATHS

(Also equivalent to CH 3100)

 

 

Date & Time : 26-04-2006/1.00-4.00 P.M.   Dept. No.                                                       Max. : 100 Marks

 

 

                                 PART-A                                                             (10×2=20)

   Answer all questions.

 

  1. Write any four characteristics of d-block elements.
  2. Write the IUPAC name of the following.

a)[ CoCl(NH3)5] Cl2          b)[ Pt(NH3)6] Cl4

  1. What is Friedel-Craft’s alkylation?
  2. Differentiate enantiomers and diastereomers.
  3. State Henry’s law.
  4. What is degree of freedom?
  5. Define quantum yield.
  6. Draw the structure of the following.
  7. Adenine b) Cytosine
  8. What is vulcanisation of rubber?
  9. How is Buna-s rubber prepared?

 

                                                    PART – B

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

 

  1. a) Transition metal compounds are generally coloured. Why?
  2. b) Differentiate primary valency and secondary valency of coordination compounds.

12     Draw the structure of hemoglobin and explain its functions.

  1. Which of the following exhibit geometrical isomerism? Explain
  2. 2-butene b) 1,2-dichloro propane c) 2,3-butenedioic acid.
  3. Compare the stereochemistry of SN1 and SN2 reaction.
  4. Explain the optical isomerism of lactic acid.
  5. Draw the phase diagram of phenol-water system and explain.
  6. Derive the rate expression of first order reaction.
  7. State a) Grotthus-Draper law b) Stark-Einstein’s law.
  8. Write a note on replication of DNA.
  9. Draw the structure and give any two functions of the following.
  10. a) Oxytocin   b) Adrenaline

 

 

  1. Define the following.
  2. a) polymer      b) degree of polymerization     c) Elastomers
  3. What are the causes of corrosion?

 

PART-C

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

  1. a) What is EAN principle? Apply it to the following compounds and explain their

stability.

  1. i) [Co(NH3)6]3+                       ii) K3[Fe(CN)]                                   (6)
  2. b) Predict the geometry, hybridization and magnetic properties of [Co(CN)6]3-                                                                                                                  (4)

24        a)  Give the mechanism of halogenation of benzene.                                     (4)

  1. Define the following term:
  2. i) racemic mixture ii) resolution iii) optical isomerism                               (6)
  3. a) What are the conditions of ideal solutions.                         (4)
  4. b) Draw the phase diagram of simple eutectic system. Explain.                    (6)
  5. Derive the rate expression for the reaction 2A¾® products. Find the value of half life period.                                                             (6+4)
  6. Discuss the double stranded helical structure of DNA. (10)
  7. a) Write a note on “galvanisation”. (4)
  8. b) Explain the mechanism of step growth and chain growth polymerization with any one example.                                                                         (6)

 

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Loyola College B.Sc. Chemistry Nov 2006 General Chemistry For Physics & Maths Question Paper PDF Download

 

            LOYOLA COLLEGE (AUTONOMOUS), CHENNAI – 600 034

B.Sc. DEGREE EXAMINATION – MATHEMATICS

AD 05

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.

  1. What is mutarotation?
  2. What are essential and non essential amino acids? Give an example.
  3. What are chromophore? Give examples.
  4. Why is pyridine more basic than pyrrole?
  5. State the first law of themodynamics.
  6. Write a note on photosynthesis.
  7. What is a peptide – linkage? Give an example for a dipeptide.
  8. Distinguish between intensive and extensive properties.
  9. Define enthalphy of neutralisation.
  10. What are antipyritics? Give an example.

PART- B                                           (8×5=40)

Answer any EIGHT questions.

  1. Explain the formation of a & b anomers of glucose.
  2. Explain any one theory of colour and constitution of dyes.
  3. Explain the preparation and uses of sulphanilamide.
  4. What is nuclear fussion? Explain its importance.
  5. Write a short notes on calomel electrode.
  6. How are amino acids synthesised by Gabriel synthesis?
  7. How is malachite green prepared? Give its uses.
  8. Explain any one theory of hydrogen bonding.
  9. a) What is Bordeaux mixture?
  10. b) Draw the structure of BHC.
  11. Explain standard hydrogen electrode.
  12. Write a note on (a) Direct dyes

(b) Vat dyes

  1. Explain Kohlrausch’s law with an example.

 

PART- C                                         (4×10=40)

Answer any FOUR questions.

  1. Draw the Born – Haber cycle for sodium chloride and mention its terms. (10)
  2. a) What is lanthanide contraction? (4)
  3. b) Explain the ion exchange method for the separation of lanthanides. (6)
  4. Discuss the structure of proteins.           (10)
  5. Elucidate the structure of fructose.           (10)
  6. a) Explain the Haworth synthesis of anthracene. (5)
  7. b) How is pyrrole synthesised? How does it react with the con. nitric acid in acetic anhydride? (5)
  8. a) Explain the role of micronutrients. (5)
  9. b) How are the following prepared? (a) urea (b) Triple superphosphate. (5)

 

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