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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.
What is piezoelectricity? Piezoelectricity: Piezoelectricity gives us a means of changing electrical energy to suppose new geometric positions and the mechanical dimensions of
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Is there any method fro estimation of alcoholic acidity of maida less than 24 Hrs.
Explain Sommerfeld theory Sommerfeld theory : The theory was originally proposed in 1900 to define and correlate the electrical and thermal properties of metals. Later, quantu
In what important respect does the conductivity of a conductor differ from that of an intrinsic Semiconductor. It is well known that the conductivity of a conductor i
Applications of permanent magnets a - Applications based on attraction or repulsion forces b - Applications based on Faraday's induction law c- Application based on Lor
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If the atmosphere had a constant temperature of 20C and constant density, how high would the air extend above sea level? Would Mt. Everest, and 10km in elevation, protrude beyond
PROCEDURE: Activity 1: Invitation of quotations. A format for inviting a quotation is given below. You are required to fill up the form for finding out the prices of the follo
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