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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.
Mask Alignment and Exposure One of the most significant steps in the photolithography process is mask alignment. A mask or "photomask" is a square glass plate with a patterned
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fing the neceessary and sufficient conditions for the numbers s and t to make the LP problem maximise z=x+y subject to:sx+ty x;y>0 have an optimal solution be feasible b
Objectives After performing this exercise you should be able to: 1. describe the design and organisation of a lab store, 2. suggest modifications in the store design,
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 of 8
ACTIVITY 1 to classify hazardous chemicals based on the information given on the labels Requirements Bottles containing chemicals (generally used in a lab) = 20 in number.
design a falling film evaporator in detail
Write balanced chemical equations for each of the following reactions, omitting (where relevant) all spectator species. (a) Solid calcium dissolves in dilute perchloric acid (HC
INTRODUCTION : You have studied about chemical hazards in Unit 13 of Block-3 and would have learnt that many chemicals are hazardous. A good practice is to exercise caution in han
the inlet diameter of venturimeter 25mm and diameter of throat is 15mm.The coefficient of discharge for venturimeter is Cv=0.98.The height is found to be 5ml density of water is 10
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