Download SGBAU B-Tech 5th Sem Chem Poly Plast Polymer Materials Question Paper

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B.Tech. Fifth Semester (Che. Tech. (Poly) (Plas.) Tech.) (CGS)

11116 : Polymer Materials : 5 PP 02

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Time : Three Hours Max. Marks : 80

Notes:

1. Answer three questions from Section A and three questions from Section B.
2. Due credit will be given to neatness and adequate dimensions.
3. Diagrams and chemical equations should be given wherever necessary.

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4. Illustrate your answer with the help of neat sketches.
5. Discuss the reaction mechanism wherever necessary.
6. Use of pen Blue/Black ink/refill only for writing the answer book.

SECTION - A

1. a) Discuss basic raw materials for polymer and their availability. 7
   

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   b) Distinguish among the structure and properties of LDPE, LLDPE and HDPE. 6
   OR
2. a) Explain PP with respect to its different tacticity. 7
   b) Explain important properties and applications of LDPE. 6
3. a) Explain the function and example of any six additives used in PVC compounding. 6
   

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   b) Discuss preparations of PVC by any one polymerization method with the help of flow sheet. 7
   OR
4. a) Explain preparation, properties and uses of cellulose nitrate. 7
   b) Explain preparation, properties and uses of CAB. 6
5. a) Explain important properties and uses of PMMA. 6
   

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   b) Explain preparation, properties and uses of EPS. 8
   OR
6. a) Explain important properties and uses of SAN. 6
   b) Explain preparation, properties and uses of HIPS. 8

SECTION -B

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1. a) Explain preparation, properties and uses of acetal resin. 8
   b) Discuss important properties and uses of PPO. 6
   OR
2. a) Explain preparation, properties and uses of PET. 8
   b) Discuss important properties and uses of PTFE. 6

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3. a) Explain chemistry and moulding powder preparation in case of PF. 7
   b) Discuss important properties and uses of UF. 6
   OR
4. a) Explain chemistry of UF and state the role of different ingredients used in UF moulding compound. 7
   b) Discuss important properties and uses of MF. 6

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5. a) Explain the preparation of epoxy resin. 7
   b) Discuss important properties and uses of unsaturated polyester resin. 7
   OR
6. a) Discuss the preparation of cellyl resin. 7
   b) Compare epoxy resin with unsaturated polyester resin with respect to curing characteristics and uses. 7

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