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1. a) How are Polymers classified?
b) Define polymerization. Differentiate addition and condensation polymerization.
2. a) Explain the free radical mechanism of addition polymerization taking ethylene as a monomer.
b) Give the synthesis and applications of Teflon.
3. a)Differentiate between thermoplastics and thermosetting plastics.
b)What is glass transition temperature?Discuss the following factors affecting GTT
i) Flexibility ii) Intermolecular forces.
4. a) Explain the manufacture and applications of the following high polymers:
i)Polymethylmethacrylates (plexi glass) ii) polyurethanes.
b) What are elastomers? Mention the advantages of synthetic rubber over natural rubber.
5. a) What are the deficiencies of natural rubber? What is vulcanization of rubber.
b) Explain the manufacture of Silicone rubber. Mention their applications.
Hard-Baking Hard-baking is the final step in the photolithographic process. This step is essential in order to harden the photoresist and better adhesion of the photoresist to
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full process of ammonia synthesis
A gas stream containing solute A at mole fraction of 0.02 is to be cleaned by absorbing 90% of the solute into a liquid stream in a countercurrent packed bed gas-liquid absorber. T
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the frame in figure consisted of members AB and BCD connected by pin at B, and member AB is a quarter circle of radius 75mm. the whole frame is supported by pins at A and C. for th
a. Explain the problems of flooding and channeling in packed tower
corrosion in boilers
Point defects: Point defects are defects which are not extended in space in any dimension. There is no strict limit for how small a "point" defect should be, but typically the ter
explain the identification of organic compounds basing on the structural theory
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