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2003 Course Speciality Polymers (Elective)

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Total No. of Questions : 12] [Total No. of Pages : 3 [3664] - 304 P 1215 B.E. (Polymer) ELECTIVE - SPECIALTY POLYMERS (2003 Course) Time : 3 Hours] [Max. Marks : 100 Instructions to the candidates: 1) Answers to Section - I and Section - II should be written on separate answer books. 2) Solve 3 questions from Section - I and 3 questions from Section - II. 3) Neat diagrams must be drawn wherever necessary. 4) Figures to the right indicate full marks. 5) Assume suitable data, if necessary. 6) Use of electronic pocket calculator is allowed. SECTION - I Q1) a) What are liquid crystalline polymers? Give examples of liquid crystalline polymers. [4] b) Write a short note on Classification of Liquid Crystalline Polymers. [10] c) Briefly comment on structural factors that cause liquid crystalline behavior. [4] OR Q2) a) Differentiate between Thermotropic and Lyotropic Liquid crystalline polymers? [4] b) Between Aliphatic and Wholly Aromatic polyamides which one are liquid [4] crystalline polymers? Justify your answer. c) Enlist various examples and applications of liquid crystalline polymers. [6] d) State typical characteristics of liquid crystalline polymers. Q3) a) [4] What are conducting polymers? Give two examples of conducting polymers. [4] b) Enlist the various applications of conducting polymers. [6] c) Write a short note on Band theory of conducting polymers. [6] OR P.T.O.

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