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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.
The functions of the oxide layer are to: 1. mask against diffusion or ion-implant 2. passivate the surface electrically and chemically 3. isolate one device from another
1. a) How are Polymers classified? b) Define polymerization. Differentiate addition and condensation polymerization. 2. a) Explain the free radical mechanism of addition p
Ask question #Minimum 100 words accepted.hardness of bore water is less than that of sea water-justify
Question:1 (a) A flowchart of a continuous steady state two-unit separation process is shown below (Figure 1.1). Each stream contains two components, x and y, in different prop
Among phosphate and calgon methods, which one would be the best option for internal conditioning
A) A horizontal tube having a 1.25 cm outside diameter is submerged in a water 1 atm and 100 oC. Determine the heat flux for the surface temperature of (a) 540 o C, (b) 650 o C,
Linear Alkyl benzene (LAB) is produced by the alkylation of benzene with olefins (assuming all dodecane). Raw maw materials: Kerosene and benzene. The chemical plant design comp
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
typesofhardness
how can i controll hardness in the boiler
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