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Polymer Technology

Polymer Technology
Commercial production of polypropylene employs __________ polymerisation.

Bulk
Emulsion
Solution
Suspension

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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?

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

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Polymer Technology
Polyhexamethylene adipimide is also known as

Bakelite
Nylon-66
Silicone rubber
Epoxy resin

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Polymer Technology
Which of the following is the most important rubber compounding ingradient which is used to improve wearing qualities of both natural rubber & SBR by imparting toughness?

Pine oil
Phosphorous
Rosin
Carbon black

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Polymer Technology
__________ is not a polyester fibre.

Nylon
Polyacrylonitrite
Terylene
Dacron

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Polymer Technology
Polycondensation of saturated dicarboxylic acid with polyhydric alcohol produces

Epoxy resin
Polyamide
Alkyd resin
Phenolic resin

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