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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.
It is desired to concentrate a NaOH solution from 12.5 % to 40% in a double effect evaporator. 50,000 lb/hr of feed solution enters the evaporator at 120 o F, and steam at 15 psig
The hardness of quenched Martensite is First enhances and then remains almost constant as the carbon percentage enhances.
Process Description For Production of Chemicals from Coal Before it can be fed to the gasification reactor, coal must be ground to meet specifications on particle size. The gr
wet chemical synthisis method
Objectives After you have done this exercise, you should be able to: 1. Prepare a comparative chart of quotations 2. fill up the quotations form 3. process a bill for
There is an an assignment in your database named "Production of Chemicals from Coal" Do you have answers to this?
Positive and Negative Photo resist There are two types of photo resist: positive and negative. For positive resists, the resist is exposed with UV light where the underlying ma
Mass transfer coefficients can be of either local or overall type. a. Describe carefully what the local and overall mass move coefficients show. b. How does the concentration
First find out the requirement of alcohol for your lab in consultation with the teacher or from records of previous years. Then fill-up F-22 form or simply write an application for
Explain the different types of polarization mechanisms in dielectrics. There are essentially four basic kinds of polarization mechanisms: Interface polarization: Electron
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