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Explain polymerisation vinyl chloride and its applications.
PVC and its applications - It is acquired from polymerisation of vinyl chloride in the presence of a catalyst as peroxides at about 500C. The properties are as mechanical strength, flexibility, porosity, electrical and moisture absorption properties can be changed through adding certain materials. PVC has fine mechanical and electrical properties. This is hard and brittle. It resists flame, most solvents and sunlight. It is non-hygroscopic. PVC is widely used as insulation and jacketing material for cables and wires. PVC films, sheets and tapes are used as insulation for conduit pipes and dry batteries.
Requirements of boiler feed water
problems of scales and sludge formation
Define Cohesive energy Cohesive energy can be described as the difference among the average energy of the atoms of a solid (especially a crystal) and that of the free atoms.
What is phosphate conditioning in water softening?
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Soft-Baking Soft-baking is the step during which almost all of the solvents are separate from the photo resist coating. Soft-baking plays a very critical role in photo-imaging.
A double riveted double cover butt joint is used for connecting plates 1.2 cm thick. The diameter of the rivets is 2.2 cm. The permissible stresses in tension - 100 N/mm2 The per
PROCEDURE : Visit the preparation room of the lab (Physics/Chemistry/Zoology/I3otany), you studied in Exercise 1 and note its features. To make your study easy and to guide you, w
Q. What are the functions of a lubricant? Describe the various types of lubrication. OR Discuss the types of mechanism of lub
Explain Ferromagnetic materials Ferromagnetic materials are those with spontaneous magnetic alignment. Ferromagnetism is the property of a material to be powerfully attracted
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