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

Related Mcqs:

In case of dry spinning of polymers, the polymer solution in a volatile solvent is forced through the spinnerates into a warm air chamber, where the solvent evaporates leaving behind the polymer in the filament form. Dry spinning is used for _______________ fibres?

A. Polythene B. PVC C. Rayon D. Polyvinyl acetate...

Addition polymerisation is not involved in the manufacture of_______________?

A. Low density polythene B. Poly vinyl chloride C. Polystyrene D. Polyhexamethylene adipamide...

Poly Vinyl chloride (PVC) is a ________________ material?

A. Thermoplastic B. Thermosetting C. Fibrous D. Chemically active...

Pick out the wrong statement?

A. Polymers made of only one monomer is called homopolymer B. Polymers made of more than one monomer is called copolymer or mixed polymer C. Vulcanised rubber is more elastic than natural rubber D. The intermolecular forces in thermoplastic polymers are intermediate to that of elastomers & fibres...

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

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