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Polymer Technology

Polymer Technology
Main constituent of cotton fibre is

Cellulose
Starch
Lignin
Gelatine

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Polymer Technology
Size range of polymer molecules varies from __________ metre.

10⁻¹ to 10⁻²
10⁻² to 10⁻⁵
10⁻⁸ to 10⁻¹⁰
10⁻⁴ to 10⁻⁷

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Polymer Technology
Maximum consumption of polymers is in

Packaging
Electrical insulation
Coating and films
Toys making

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Polymer Technology
Which of the following is the lowest cost plastic commercially available?

Teflon
Bakelite
Polythene
PVC

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Polymer Technology
Natural rubber is obtained from latex, which is a colloidal dispersion of rubber in water. Which of the following is used as a coagulant in latex?

Neither A nor B
Potassium alum
Both A & B
Ammonium alum

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Polymer Technology
Branched chain polymers compared to linear polymers have higher

Degree of irregularity in atomic packing
Melting point
Tensile strength
Density

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