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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.
Heat capacity: Heat capacity of furnace depend on (1) Thermal conductivity (2) Specific heat and (3) Specific gravity of refractory. The dense and heavy fire clay
Bulk density: This is represented by the weight per unit volume of the refractory of (g/cm 3 ). This volume includes the volume of the pores space, therefore, higher the bulk dens
Ask questionbats #Minimum 100 words accepted#
A contaminated soil contains 100 mg metals/kg soil (all metals are readily condensable), 50,000 mg S/kg soil, 1,000 mg F/kg soil, 980 mg/Kg of VOCs and 40,000 mg Cl/kg soil and is
Ask question #Minimum 100 words accepted.hardness of bore water is less than that of sea water-justify
Porosity: The property of the refractory brick is the ratio of its pore volume to the total volume. The refractory material with high porosity is not preferred for furnace lining
USES Sensors and devices based on Hall Effect are used for: 1 Analog multiplication 2 Current sensing 3 Position and motion sensing 4 Automotive ignition and fuel in
all about aeration in water system
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
putting example of literature review
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