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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.
Is a density bottle the sane as a pycnometer?
What are the objectives of annealing? Annealing , is a heat treatment where in a material is altered, causing alters in its properties like as strength and hardness. It is a p
Design and Construction : Note the design of the college building. Also observe the quality of construction and the materials (bricks, tiles, stone, cement, mosaic or any other)
INTRODUCTION : Here you were introduced to the essential features of a good laboratory. Since no two labs are alike, it is important to know the design and organisation of the lab
Pure silicon at zero K is an Insulator.
importance of chlorination in water
A company is using a piece of equipment which originally cost $30,000. The equipment has been in use for 5 years, and now has a net realizable value of $6000. At the time of instal
What is the phase rule and what does it indicate? Gibbs' phase rule is the fundamental rule on which phase diagrams are based. It gives the number of degrees of freedom for a g
Objectives After doing this exercise you should be able to: 1. Describe the features of the preparation room of the lab you have visited, 2. Examine and evaluate a prepar
Pour point: Just as flashpoint when temperature is further lowered below cloud point of certain temperature, oil becomes semi-solid and losses its flow characteristics. This point
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