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Section-A

1. Write short answers of any FIVE: 5 i) Define Rf value in CHROMATOGRAPHY.

ii) Define COAGULATION and PEPTIZATION.

iii) Define THERMOPLASTIC and THERMOSETTING Polymers.

iv) Define THERMISTERS and CERMETS.

v) Define Half Life Periods of RADIOACTIVE SUBSTANCES.

vi) Define: FERMENTATION, MOLASSES.

vii) Give the applications of OPTICAL FIBER.

viii) Define ANNEALING.

Section – B

2.a) Define: PARTITION Law, STATIONARY and MOBILE PHASES. Discuss the CHROMATOGRAPHIC separation and detection of a sample mixture containing Pb2+ and Cd2+

salts. 2,2 b) Define: i) LYOPHILIC Sol. ii) LYOPHOBIC Sol. 4 iii) TYNDALL EFFECT iv) BROWNIAN MOVEMENT.

3.a) Assign the CHARACTERISTIC INFRARED ABSORPTIONS in the following functional groups: 4 i) ALCOHOL ii) KETONE iii) ALDEHYDE iv) ESTER. b) Show all the transitions in the ULTRAVIOLET/ VISIBLE SPECTRUM of the following compounds: 4 i) ACETONE ii) ETHANOL iii) METHYL NITRILE iv) ACETAMIDE.

4.a) Differentiate between: i) Nuclear Fission and Nuclear Fusion reaction 2,2 ii) Natural radioactivity and Artificial radioactivity. b) Describe the applications of RADIOACTIVE ISOTOPES. 4

5.a) What is CELL CONSTANT? How is it determined? 4 b) State and explain the OSTWALD DILUTION LAW. 4

SECTION-C

6.a) Describe the PREPARATION OF SILICONES. In what way the Silicones are superior to ORGANIC POLYMERS? 3,1 b) What are FERTILIZERS? Why are they needed? Write the formulae of GYPSUM and DAP. 1,2,1

7.a) Define: i) CHROMOPHORE ii) AUXOCHROME. 4 How are Dyes classified on the biases of application (dying of Fabrics)? b) Discuss the preparation of ETHYL ALCOHOL by Fermentation method. 4

8.a) What are the RAW MATERIALS of GLASS? How is Glass Manufactured? 4 b) Describe the WET METHOD for the manufacture of CEMENT. 4

9.a) Describe the METALLURGYofCOPPER.Describe Electrolytic RefiningofCOPPER. 4 b) Whatare CERAMIC COMPOSITES? Inwhatrespectthe Ceramic Composites aresuperiorto Metals and Polymers? 4

***B.A/B.Sc-I (09/A) xxvii***

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last updated on 28-04-2019