
	Trending ▼ ICSE CBSE 10th ISC CBSE 12th CTET GATE UGC NET Vestibulares ResFinder

2003 Course Speciality Polymers (Elective)

4 pages, 38 questions, 0 questions with responses, 0 total responses,

	pune_eng	+Fave Message
	Profile Timeline Uploads Q & A

Home > pune_eng >

Instantly get Model Answers to questions on this ResPaper. Try now!
NEW ResPaper Exclusive!

Formatting page ...

Total No. of Questions : 12] P1565 [Total No. of Pages : 4 [3764]-362 B.E. (Polymer) SPECIALITY POLYMERS (2003 Course) (Elective) Time : 3 Hours] [Max. Marks : 100 Instructions to the candidates: 1) Answer 3 questions from Section-I and 3 questions from Section-II. 2) Answers to the two sections should be written in separate books. 3) Neat diagrams must be drawn wherever necessary. 4) Figures to the right indicate full marks. 5) Your answers will be valued as a whole. 6) Use of logarithmic tables, slide rule, Mollier charts, electronic pocket calculator and steam tables is allowed. 7) Assume suitable data, if necessary. SECTION - I Q1) a) Define Liquid Crystalline Polymers. Give their classification. [5] b) List a few commercial Liquid Crystalline Polymers. [3] c) What is a mesophase? [2] d) List and show pictorially different types of mesophases. [4] e) Explain in brief structural factors responsible for liquid crystalline behaviour. [4] OR Q2) a) What is a mesogen? [2] b) Classify LCP s based on presence of mesogen in a chain. Give suitable examples. [6] c) Draw typical structures of MCLCP and SCLCP. [6] d) State the properties of LCP s. [4] P.T.O. Q3) a) Explain in brief the band theory of conduction in conducting polymers. [6] b) Name a few conducting polymers and list their applications. [5] c) Draw structures of 5 conducting polymers. [5] OR Q4) Justify with suitable structures polypyrole and polyaniline are conducting polymers. [16] Q5) Answer the following questions: a) List the structural criteria required to get heat resistance in a polymer.[5] b) Give examples of heat resistant polymers with structure. At least three. [4] c) What are the applications of heat resistant polymers. [4] d) Polyparaphenylene is the most heat resistant polymer but has no commercial significance. Why? [3] OR Q6) Discuss synthesis, properties and applications of any 4 heat resistant [16] polymers. SECTION - II Q7) a) What are photosensitive polymers? Give three examples of synthetic photopolymers. [4] b) What are photoresists? Explain what are positive and negative photoresists. Give applications of these. [6] c) With the help of a reaction show how photocrosslinking occurs in polyvinylcinnanate. [3] d) Define a membrane. Give the various methods for manufacturing membranes. [5] [3764]-362 -2- OR Q8) a) How is a photoresist applied on a substrate? [6] b) State various applications of photosensitive polymers. Explain any one in detail. [6] c) Which polymeric materials are used in the making of membranes? [3] d) State the various applications of polymeric membranes. [3] Q9) a) What are biopolymers? How are synthetic biopolymers made? Explain any two case studies. [6] b) What are the physical properties required to choose a polymer for use in biomedical application? [4] c) What is the role of polymer in drug delivery systems? Explain the mechanism. [6] OR Q10) a) List the various polymers used in biomedical devices with corresponding biomedical uses and properties. [6] b) State the different orthopaedic fixation devices with polymers used for the same. [6] c) Write a short note on biocatalysts . Q11) a) Write a note on polymers used in green house applications. [4] [5] b) What are the reasons for increasing use of plastics in construction both structural and non-structural? State the share of various plastics in construction. Give corresponding applications of each plastic. [5] c) What is telecommunication? Define fiber optics . Where are they used? [6] State the principle used in fiberoptic cables. [3764]-362 -3- OR Q12) a) How are polymers used for controlled release of agricultural chemicals? What are its advantages and disadvantages? What are the desirable properties required of the polymer used in the coating? [6] b) What is a polymer concrete ? State its advantages and disadvantages. State its applications. What are polymer impregnated concretes? [6] c) How are optical fibers made? What are its advantages? rrr [3764]-362 -4- [4]

Formatting page ...

Tags : Pune, Engineering, University of Pune, Engineering question papers, Pune University, previous year question papers, question papers, india, model question paper, pune university paper pattern, pune university syllabus, old question papers

pune_eng chat

Horizontal lines at:
Guest Horizontal lines at:
AutoRM Data:
Box geometries: