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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.
a) List various advantages and drawbacks of using transparent polymeric materials for eyeglass lenses. (b) Cite 4 properties (in addition to being transparent) that are important
#synthesis and uses of westron
Which one of the following statements is correct? You may wish to examine a molecular model of this compound. 1. Carbon D is an asymmetric center and its configuration is R 2
What is Metallisation Metallisation : metalizing is the procedure of evaporating a film of metal onto products. Normally the same is done in vacuum, therefore called vacuum m
a) List the dissimilar Heat transfer equipment involved in your plant. Also describe the governing principle or modes of heat transfer for every equipment that listed. Determine th
Explain covalent bond A covalent bond is a form of chemical bonding that is characterized by the sharing of pairs of electrons among atoms, or among atoms and other covalent
Activity to Learn The Handling Of Hazardous Chemicals: Use Of Fume Cupboard Previous you learn about the importance of fume cupboard and its usage. There are many chemicals whi
a. Explain the problems of flooding and channeling in packed tower
the pilling bedworth ratio of iron is 1.77 why it not stable as per rulr
problems of scales and sludge formation
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