Polycarbonate,LCP,biopol,conducting polymer,electroluminescent polymer

Polycarbonate polymers are used for making goggles because

• It has high durability• It has high impact resistance• It has high resistance to water• It has high optical clarity

Kevlar is a

• Glass fiber• Carbon fiber• aramid fiber • metallic fiber

The chemical composition of Kevlar is

• Para polyphenylene terephthalene• polyphenyl para terephthalamide• poly paraphenylene terephthalamide• poly terephthalene paraphenylene

If a liquid crystalline polymer exhibits liquid crystalline phase in

solution ,it is known as

• Thermotropic• Lyotropic• Mesotropic• sesotropic

If a liquid crystalline polymer exhibits liquid crystalline phase in melt,it is known as

• Thermotropic• Lyotropic• Mesotropic• sesotropic

Kevlar isa

• Smectic lyotropc LCP• nematic lyotropc LCP• Smectic thermotropic LCP• nematic thermotropic LCP

Thermal stability of kevlar is due to

• Amide group• Aramide ring structure• Long chain• All of these

The disprsed phase in fibre reinforced plastic can be

• Glass fibre• Carbon fibre• Aramid fibre • All of these

First reported electroluminescent polymer is

• Polyamide• Poly-phenylene –vinylene polymer• Polyacetylene• Poly vinyl chloride

In a polymer light emmiting diode ,Indium –tin-oxide is commanly used as

• Anode material• Cathode material• For both anode and cathode • For neither anode nor cathode

Biopol is the commercial name of

• Polyhydroxybutyrate• Polyhydroxyvalarate• Polyhydroxybutyrate-hydroxyvalarate• Hydroxybutyrate-hydroxyvalarate

Polyacetylene is doped with----to increase conductivity

• Germanium• Silicon• Iodine• benzene

Conductivity of polymers is observed due to

• P dopingof ICP• N dopingof ICP• Metallic fibre blending of ECP• Allof these

On polymer backbone ,N doping creates

• Positive charge• Negative charge • Neutral charge • All of these