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

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

 

                                                    PART – B

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

 

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

12     Draw the structure of hemoglobin and explain its functions.

13. Which of the following exhibit geometrical isomerism? Explain
14. 2-butene b) 1,2-dichloro propane c) 2,3-butenedioic acid.
15. Compare the stereochemistry of S_N1 and S_N2 reaction.
16. Explain the optical isomerism of lactic acid.
17. Draw the phase diagram of phenol-water system and explain.
18. Derive the rate expression of first order reaction.
19. State a) Grotthus-Draper law b) Stark-Einstein’s law.
20. Write a note on replication of DNA.
21. Draw the structure and give any two functions of the following.
22. a) Oxytocin   b) Adrenaline

 

 

21. Define the following.
22. a) polymer      b) degree of polymerization     c) Elastomers
23. What are the causes of corrosion?

 

PART-C

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

23. 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  ]                                   (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 (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.

11. Explain the formation of a & b anomers of glucose.
12. Explain any one theory of colour and constitution of dyes.
13. Explain the preparation and uses of sulphanilamide.
14. What is nuclear fussion? Explain its importance.
15. Write a short notes on calomel electrode.
16. How are amino acids synthesised by Gabriel synthesis?
17. How is malachite green prepared? Give its uses.
18. Explain any one theory of hydrogen bonding.
19. a) What is Bordeaux mixture?
20. b) Draw the structure of BHC.
21. Explain standard hydrogen electrode.
22. Write a note on (a) Direct dyes

(b) Vat dyes

22. Explain Kohlrausch’s law with an example.

 

PART- C                                         (4×10=40)

Answer any FOUR questions.

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

 

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LOYOLA COLLEGE (AUTONOMOUS), CHENNAI – 600 034

B.Sc.

LM 04

DEGREE EXAMINATION – MATHS / PHYSICS

SECOND SEMESTER – APRIL 2007

 

CH 2102/2100/3100 – GENERAL CHEMISTRY FOR PHYSICS & MATHS

 

 

Date & Time: 23/04/2007 / 1:00 – 4:00            Dept. No.                                                     Max. : 100 Marks

 

 

 

PART-A

Answer ALL questions.                                                                       (10 ´ 2 = 20 marks)

1. Why are transition metal compounds colored? Give an example.
2. Name the following compounds systematically.
3. a) [Cr(en)₂(NH₃)₂]Cl₃ b) K₃[Fe(H₂O)(CN)₅]
4. Draw the resonance structures of phenol.
5. How is nitronium ion generated for nitration reaction?
6. Define Henry’s law. What are its drawbacks?
7. State Grothus-Draper law.
8. Draw the structure of Adenosine nucleotide.
9. Write a short note on adrenaline.
10. Bring out the differences between thermoplastics and thermosetting plastics.
11. Define corrosion. Give any two examples.

 

PART-B

Answer any EIGHT questions.                                                           (8 ´ 5 = 40 marks)

11. Calculate the EAN and predict whether the following complexes are stable or not.
12. a) [Fe(CN)₆]^3- b) [Pt(Cl)₄]^2-
13. Discuss the geometrical isomerism exhibited by the complexes with coordination number 4 and 6.
14. Explain the mechanism of chlorination of benzene.
15. Draw the potential energy diagram for the conformational changes of n-butane along C₂-C₃ axis.
16. Write the mechanism of S_N1 reaction with an example.
17. Compare ideal and non-ideal solutions. Give an example for each.
18. Discuss the phase diagram of phenol-water system in detail.
19. Explain how chlorophyll is helpful for photosynthesis.
20. Give a detailed account on sex hormones.
21. Discuss on the structure and types of RNA in detail.

 

 

 

21. How are Nylon66 and polystyrene synthesized? Mention their uses.
22. Mention any two methods of prevention of corrosion in detail.

 

PART-C

Answer any FOUR questions.                                                            (4 ´ 10 = 40 marks)

23     a) Explain Werner’s coordination theory in detail.                                (5)

1. b) Using valence bond theory, bring out the structure and magnetic property of the following compounds. (2 ´ 2½)
2. i) [Cu(Cl)₄]^2-                           ii) [Fe(H₂O)₆]²⁺

24     a) How will you distinguish maleic acid from fumaric acid? Explain any two methods.                                                                                                (5)

1. b) Define the following terms. (1 + 2 + 2)
2. i) Chirality ii) Enantiomers            iii) Diastereomers

25     Discuss the phase diagram of one component system in detail.                        (10)

26     a) Define half-life period. Calculate the t_1/2 of a first order reaction.                (5)

1. b) Discuss the causes of corrosion. (5)

27     a) Draw the structure of the following                                                          (2 ´ 2½)

1. i) uracil ii) adenine
2. b) Differentiate DNA and RNA with any five points. (5)

28     How will you differentiate the following?                                                        (5 + 5)

1. a) Condensation polymerization and addition polymerization
2. b) Natural polymers and synthetic polymers.

 

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LOYOLA COLLEGE (AUTONOMOUS), CHENNAI – 600 034

B.Sc. DEGREE EXAMINATION – MATHEMATICS & PHYSICS

LM 08

FOURTH & THIRD SEMESTER – APRIL 2007

                 CH 4200 / 3200- GENERAL CHEMISTRY FOR PHYSICS & MATHS

 

 

 

Date & Time: 26/04/2007 / 9:00 – 12:00 Dept. No.                                             Max. : 100 Marks

 

 

PART- A                                                                     (10×2=20)

Answer ALL the questions.

 

1. What are heterocyclic compounds? Give an example.
2. State and explain Hess’s law.
3. How will you synthesis pyrrole from furan?
4. What are azo dyes? Give an example.
5. Give the structure and uses of 2, 4, D.
6. What are oligosaccharides? How they are classified?
7. Differentiate intensive and extensive properties with example.
8. Define first law of thermodynamics.
9. What are peptides? Give the structure and name of any one dipeptide.
10. Write a short note on antipyretics with an example.

 

PART- B                                                        (8×5=40)

Answer any EIGHT questions.

 

11. Discuss the different types of hydrogen bonding with suitable examples.
12. Explain the Haworth synthesis of naphthalene.
13. Give a method of preparation and uses of malachite green.
14. Derive Kirchoff’s equation.
15. Explain the cyclic structure of glucose.
16. How will you synthesize glycine by Gabriel phthalimide synthesis?
17. Explain the manufacture of the following.
18. a) Super phosphate of lime b) Urea
19. What is nuclear fission reaction? Explain its importance.
20. Explain the secondary structure of proteins.

 

 

20. a) Define octane number.
21. b) Give the preparation and uses of DDT.
22. Draw and explain standard hydrogen electrode.
23. Discuss the role of macronutrients and micronutrients.

 

PART- C                                                                    (4×10=40)

Answer any FOUR questions.

 

23. a) Explain the theory of hydrogen bonding. (4)
24. b) Discuss the separation of lanthanides by ion exchange method.                         (6)
25. a) Write short notes on antibiotics. Give the structure of penicillin. (5)
26. b) How will you prepare sulphanilimide? Give its uses.                         (5)
27. a) Discuss any three factors influencing the activity of enzymes? (6)
28. b) Explain Sanger’s method for the determination of N- terminal

analysis of aminoacids.                                                                                   (4)

26. Discuss the different types of conductometric titrations. (10)
27. a) Write a note on chromophore and auxochrome with examples.               (5)
28. b) How is thiophene synthesized? Describe any one reaction. (5)
29. Draw Born-Haber cycle and explain the calculation of lattice energy. (10)

 

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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)

(ii)

 

 

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.
* * * * *

 

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        LOYOLA COLLEGE (AUTONOMOUS), CHENNAI – 600 034

WD 04

B.Sc. DEGREE EXAMINATION – MATHEMATICS & PHYSICS

SECOND SEMESTER – April 2009

CH 2102 / 2100 – GENERAL CHEMISTRY  FOR PHYSICS & MATHS

 

 

 

Date & Time: 25/04/2009 / 1:00 – 4:00  Dept. No.                                                 Max. : 100 Marks

 

 

                                                                      PART-A                  

 Answer ALL questions.                                                                   (10 x 2 = 20)

 

1. Write the IUPAC names of the following complexes.

(i) Na₂[Fe(CN )₆]      (ii)    [Co(en)₃]Cl ₃                                                                                                                                  2. The expected and actual configuration of Cr and Cu differs. Why?

3. Write the following acids in increasing order of their acidity. Justify your answer.

ClCH₂COOH, CH₃COOH, CCl₃COOH, Cl₂CHCOOH

4. Mention the type of isomerism exhibited by maleic and fumaric acids. Give their structures.
5. State Beer-Lambert’s Law.
6. Differentiate homogeneous and heterogeneous catalysis with suitable examples. 7. What are the types of RNA? Mention their functions.
7. What are the diseases associated with abnormal metabolism of thyroxine? What are its

symptoms?

9. What is meant by vulcanization?

10 How corrosion is prevented by electroplating?

 

PART-B

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

 

11. Explain the postulates of Werner’s theory of coordination complexes. 12. Explain the structure and functions of chlorophyll.
12. Write all possible isomers of (i) [RhCl₂(en)₂]⁺ (ii)  [CoCl₃(NH₃)₃]⁺
13. Discuss the various conformers of butane.
14. Explain the optical isomerism in tartaric acid. 16. Derive the expression for rate constant of first order reactions.                                                            17. Compare thermal and photochemical reactions.                                                                                      18.  Draw the structure and give any two functions of the following.
15. a) Oxytocin   b) Testosterone
16. What are the various achievements of genetic engineering and give any two possible

dangers of it.                                                                                                                                     20. Explain the electrochemical mechanism of corrosion.                                                                                                    21. State Raoult’s law. Discuss the positive deviations of real solutions from their ideal  behaviour.   22. Differentiate the following with suitable examples.

(a) Step growth and chain growth polymerization

(b) Thermoplastics and thermosetting plastics

 

PART-C

Answer any FOUR questions                                                          (4 x10 = 40)  

23. i) Discuss the postulates of VB theory.   (4+6)
24. ii) Predict the geometry, structure and magnetic property of [CoF₆]^3-
25. i) Compare S_N1 and S_N2 reactions (5+5)
26. ii) Give the mechanism of nitration of benzene.
27. Discuss the application of phase rule to water system.
28. i) What is the effect of temperature on the rate of a reaction? (4+6)
29. ii) Discuss the variation of mutual solubility of phenol and water with temperature.
30. Discuss the double helical structure of DNA. (5 + 5).
31. How do the following polymers prepared? Give any two uses of them.

(a) Buna-S     (b) Bakelite     (c) PET                 (3+4+3)

 

 

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LOYOLA COLLEGE (AUTONOMOUS), CHENNAI – 600 034

B.Sc. DEGREE EXAMINATION – CHEMISTRY

SECOND SEMESTER – APRIL 2012

CH 2102 – GENERAL CHEMISTRY FOR PHYSICS & MATHS

 

 

Date : 23-04-2012              Dept. No.                                        Max. : 100 Marks

Time : 9:00 – 12:00

 

 

 

Part – B

Answer ALL questions.                                                                     (10 ´ 2 = 20 marks)

1. Why do transition elements show variable valencies?
2. Mention the biological importance of Chlorophyll.
3. Define inductive effect with an example.
4. Draw the optical isomers of tartaric acid.
5. State Raoult’s law.
6. Draw the structure of testosterone.
7. What is an auto catalyst? Give an example.
8. Mention the uses of Buna-S rubber.
9. What is meant by hyper thyroidism?
10. How will you prepare polyethylene?

Part – B

    Answer any EIGHT questions.                                                       (8 ´ 5 = 40 marks)

11. Draw the geometrical isomers exhibited by square planar complexes.
12. Calculate EAN of the metal ion in the following complexes.
13. i) ) [Co(NH₃)₆] ²⁺   ii) )  [Fe(CN) ₆]^4-
14. Explain the S_N1 mechanism of alkyl halides.
15. Why phenol is more acidic than ethyl alcohol?
16. How will you distinguish between maleic and fumaric acids?
17. Describe Beer – Lambert’s law.
18. Mention any five characteristics of a catalyst.
19. Write a note on following:
20. Activation energy b) Grotthus Drapper’s law.
21. Explain the replication of DNA.
22. List the application and risks of genetic engineering.
23. Discuss chain growth and step growth polymerization.
24. Give the synthesis of PET and give its uses.

Part-C

   Answer any FOUR questions.                                                         (4 ´ 10 = 40 marks)

 

23. a) How is hardness of water determined using EDTA?
24. b) What is a bidentate ligand? Give an example. (7+3)

 

24. a) Discuss the optical isomerism exhibited by octahedral complexes.

b)Write Friedel Crafts alkylation reaction with mechanism_.                              (6+4)

25. a) Explain the conformational isomers of n-butane.
26. How will you determine the pH of a solution by glass electrode?

 

26. Derive an expression for the rate constant of a second order reaction involving two different reactants.

 

27. a) Compare thermal and photochemical reaction. b) Give equation for the preparation of following
28. i) PVC            ii) Buna-S                                                                 (6+4)

 

28. a) How is poly acrylate synthesized? Mention its uses.
29. b) Explain the Galvanization method of prevention of corrosion. (5+5)

 

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