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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.
A single-effect evaporator is used to concentrate 60000 kg h -1 of a 40 wt % NaOH solution which is fed to the evaporator at 40°C. The concentrated liquid is a 55 wt % NaOH soluti
The following three types of breakdown are possible in Dielectrics: (a) Electrothermal Breakdown - This is caused by the heat produced because of the dielectric loss which is
Ask question #Minimum 100 words accepted.hardness of bore water is less than that of sea water-justify
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1. Mass transfer coefficients can be of either local or overall type. a. Explain carefully what the local and overall mass transfer coefficients represent. b. How does the co
Properties of filament and contact materials. The Filament materials must have low resistance temperature co-efficient, high melting point, high mechanical strength, ductility
How chemilcal#..
what is break point on chlorination
a) The vacuum in the headspace of a can of food is normally formed by "hot fill" exhausting - that is, the cans are closed when the can is filled with product at a temperature o
For a given bulk solid how can the particle size distribution be determined? In order to determine particle size distribution the simplest method is to make use of a sieve stac
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