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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.
Planar defects * Grain boundaries occur where the crystallographic direction of the lattice abruptly changes. This usually happens when two crystals start growing separately an
Soft magnetic materials Soft magnetic materials are majorly utilized in those applications in which the soft material has to amplify the flux occured by the electrical current
Give the properties and applications of Bakelite. This is most common type of phenol formaldehyde. This is hard, thermosetting, dark coloured material. Its major properties
structure of EDTA and estimation of hardness of water by Edta method
Ask question #Minimum 100 words accepted.hardness of bore water is less than that of sea water-justify
how to calucuate weight% of hydrogen sulphate when density =20 and temparature =80 are given
how many particulenvndvhkvhxkxcvjxvcmv.khcevhfve
INTRODUCTION : This exercise is based on here of this course where you were introduced to For Mode-1 Students the essential features of a good preparation room that offers service
alfred werner coordination number
What is dielectric strength? Dielectric strength: It is the high voltage / field gradient (voltage per unit thickness) which the dielectric can withstand without failure / brea
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