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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.
calculate the volume at (160c) and 221c if the quality is 0.85
Which one of the following statements is correct? You may wish to examine a molecular model of this compound. 1. Carbon G is an asymmetric center and its configuration is R 2
A insulated vessel is divided by a partition into two parts. Initially, the left side contains steam at 300C, 20 bar, and the right side is evacuated. Then, the partition is sudden
I want some lecture notes on properties of pure substances, Ideal gas laws
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
Explain Dipole Relaxation Dipole Relaxation is the method, occupying a specific period of time after a change in the applied electric field, in which the orientation polariza
What is wrong with each of the following attempts to write an electron configuration? Justify your answer with suitable explanation. (a) 1s22s3 (b) 1s22s22p23s2 (c) 1s22s23s2 (d) 1
step to design heat exchanger
what us thermodynamics
Q. What are lubricants? Explain properties of lubricating oil. Ans. Lubricants: The metal to metal frictional resistance can be minimized by using certain suitable substanc
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