M.Sc. (Semester III) (CBCS) Examination Mar/Apr-2018
Polymer Chemistry
FUNDAMENTALS OF FEEDSTOCKS AND POLYMERS
Time: 2½ Hours
Max. Marks: 70
Instructions: Attempt five questions. Section-I is compulsory. Attempt any two questions from Section-II and any two questions from Section -III. Answer to all 5 questions (from section II, III) should be written in same answer book. All question carry equal marks. Figures to the right indicate full marks. Use of log table and calculator is allowed.
Section I
Q.1
Answer the following:
14
Give the order of knocking observed in various types of hydrocarbons.
Define the term autoacceleration. Why autoacceleration takes place in bulk polymerization?
Define term octane number and cetane number.
Teflon, Decron, Nomex and Resol are trade names which polymers?
What is the requirement of monomer in melt polycondensation?
How LLDPE and VLDPE are synthesized?
Why we are getting narrow molecular weight distribution in suspension polymerization method?
Section II
Q.2
Discuss the IUPAC nomenclature system used for polymers in details.
07
Describe the importance of propylene as building block for polymer industries.
07
Q.3
Explain the synthesis, properties and application of nylon-6,6.
07
Discuss in detail emulsion polymerization technique.
07
Q.4
Give an account on any one renewable resource as building block for polymer industry.
07
Explain the batch, semibatch and continuous processes used for synthesis of commercial polymers. What are the limitations of these processes?
07
Section III
Q.5
Explain the catalytic cracking process.
05
Discuss the interfacial polymerization technique. Give an account on role of Phase Transfer Catalyst in interfacial polymerization.
05
Describe the theories associated with origin of petroleum.
04
Q.6
Write the difference between addition and condensation polymerization.
05
Discuss the synthesis and application of poly(ethylene terephthalate).
05
Describe the polymer nomenclature based on source.
04
Q.7
Write a note on any Three of the following.
14
Ladder and semi ladder polymers
Properties and application of PVC
Refining of crude oil
Solution polymerization technique