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

FirstRanker.com

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

11116 : Polymer Materials : 5 PP 02

--- Content provided by FirstRanker.com ---

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.

--- Content provided by‍ FirstRanker.com ---

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
   

   --- Content provided by⁠ FirstRanker.com ---

   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
   

   --- Content provided by‌ FirstRanker.com ---

   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
   

   --- Content provided by⁠ FirstRanker.com ---

   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

--- Content provided by‌ FirstRanker.com ---

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

--- Content provided by‍ FirstRanker.com ---

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

--- Content provided by⁠ FirstRanker.com ---

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

--- Content provided by‍ FirstRanker.com ---