Polyurethane cannot be used to make____________________?

Byadmin March 7, 2019August 25, 2021

Polyurethane cannot be used to make____________________?

A. Automobile cushion
B. Thermal insulation in refrigerator
C. Coating and adhesive
D. Fibre reinforced plastic (FRP)

Polymer Technology

Properties of a polymer is affected by the____________________?

Properties of a polymer is affected by the____________________?

A. Chain length
B. Intermolecular forces
C. Both A. and B.
D. None of these

Read More Properties of a polymer is affected by the____________________?
Polymer Technology

Contact lenses for eyes are made of Perspex, which is nothing but_______________?

Contact lenses for eyes are made of Perspex, which is nothing but_______________?

A. poly-methyl-methacrylate
B. Polystyrene
C. Unsaturated polyester
D. Polypropylene

Read More Contact lenses for eyes are made of Perspex, which is nothing but_______________?
Polymer Technology

Gutta percha rubber is_________________?

Gutta percha rubber is_________________?

A. Soft & tacky at room temperature
B. An isomer of natural rubber
C. A thermosetting resin
D. Recovered by coagulation of rubber latex

Read More Gutta percha rubber is_________________?
Polymer Technology

Polymethyl methacrylate (PMMA) which is also known as Perspex and is produced by bulk polymerisation of methyl methacrylate is not a ______________ polymer?

Polymethyl methacrylate (PMMA) which is also known as Perspex and is produced by bulk polymerisation of methyl methacrylate is not a ______________ polymer?

A. Thermoplastic
B. Thermosetting
C. Linear
D. Glass like transparent

Read More Polymethyl methacrylate (PMMA) which is also known as Perspex and is produced by bulk polymerisation of methyl methacrylate is not a ______________ polymer?
Polymer Technology

_____________ tubes are good substitute for human blood vessels on heart by-pass operation?

_____________ tubes are good substitute for human blood vessels on heart by-pass operation?

A. PVC
B. Polythene
C. Teflon/Dacron
D. Polystyrene

Read More _____________ tubes are good substitute for human blood vessels on heart by-pass operation?
Polymer Technology

Typical solvent polymerisation reaction conditions for the production of high density polythene by Zeigler process is__________________?

Typical solvent polymerisation reaction conditions for the production of high density polythene by Zeigler process is__________________?

A. 7 kgf/cm2 and 70 °C
B. 1000 kgf/cm2 and 100°C
C. 7 kgf/cm2 and 700°C
D. 1 kgf/cm2 (gage) and 70°C

Read More Typical solvent polymerisation reaction conditions for the production of high density polythene by Zeigler process is__________________?

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