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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.
Wet air containing 4.0 mole% water vapor at 76°F and 14.8 psia is passed through a column of calcium chloride pellets. The pellets absorb 97% of the water and none of the other con
#quehe two sides of a triangle are 17 cm and 28 cm long, and the length of the median drawn to the third side is equal to 19.5 cm. Find the distance from an endpoint of this median
what are the applications of radioactivity in engineering
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
what is molality and how to calculate
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
derive an equation for efficiency of heat engine
manufacture process
understanding the concept of entrepreneurship and the process of innovation, come out with one assignment per group the used of materials in industry.
a. Explain the problems of flooding and channeling in packed tower
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