“Loyola College B.Sc. Chemistry April 2009 Adv. General Chemistry For Phys.& Maths Question Paper PDF Download”

LOYOLA COLLEGE (AUTONOMOUS), CHENNAI – 600 034

B.Sc. DEGREE EXAMINATION – PHYSICS & MATHEMATICS

WO 08

THIRD SEMESTER – April 2009

CH 3202 / 3200 – ADV. GENERAL CHEMISTRY FOR PHYS.& MATHS

 

 

 

Date & Time: 16/04/2009 / 1:00 – 4:00         Dept. No.                                                       Max. : 100 Marks

 

 

PART-A

Answer all the questions:                                                        (10 × 2 = 20)

  • What is meant by intermolecular hydrogen bonding ? Give an example.
  • Write any two consequences of lanthanide contraction?
  • Draw the structure of  Ibruprofen . Give its uses.
  • State the first law of thermodynamics.
  • Mention any two uses of sulphadizine.
  • Give any one preparation of thiophene.
  • How is a dipeptide formed ? Give an equation.
  • What is nuclear fission reaction? Give an example.
  • Write the important function of any three essential nutrients for the plant growth.
  • Define Octane number.

PART-B

Answer any Eight questions:                                      (8× 5 = 40)

 

  • Explain the theory involved in hydrogen bonding .
  1. How will you separate o –and p – nitrophenol ?
  • How is the solubility of sparingly soluble salt determined ?
  • Discuss Born– Haber cycle with an example.
  • Define enthalpy of neutralization. Explain why the enthalpy of neutralization of a strong acid vs. strong base is always a constant?
  • Derive Kirchoff’s equation.
  • Derive the relation connecting ∆E and ∆H for a reaction involving an ideal gas.
  • State and explain Kohlrausch’s Law.
  • Discuss the open chain formula of glucose.
  • Explain the preparation of an amino acid by Gabriel synthesis.
  • Describe the classification of enzymes based on IUB system.
  • Explain the uses of radioisotopes in medicines and agriculture.
  • What are mixed fertilizers? Give any four advantages of it.

 

PART-C

Answer any Four questions:                                                   (10 × 4= 40)

 

  • Describe the separation of lanthanides by ion exchange method .(7)
  1. ii) Why do ice float on water? (3)
  • Give a method of preparation and uses of  sulphanilamide ( 5 )
  1. How is naphthalene prepared by Haworth synthesis? (5)
  • Explain conductometric titration of (i) strong acid against a strong base

(ii) weak acid against strong base.

  • Explain the working principle of  primary reference electrode  (7)
  1. What is the electrophile ? Mention the electrophile in sulphonation. ( 3)
  • i . Discuss the various factors affecting the enzyme reaction.(8)

ii . Write the lock and key mechanism of an enzymatic reaction.(2)

  • Write briefly on any two of the following: (5+5)
    1. Bordeaux mixture.
    2. Chromophores
    3. Photosynthesis
    4. Nuclear fusion

 

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