Chemical Engineering MCQs

Page No. 354

Orlan fibre which is used as a wool substitute is __________________?


aAn amorphous polymer

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bA natural polymeric fibre

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cPolyacrylonitrile

✓


dPoly-methyl-methacrylate (PMMA)

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View Answer Polyacrylonitrile

Teflon is__________________?


aPhenol formaldehyde

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bAn inorganic polymer

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cPolytetrafluroethylene (PTFE)

✓


dA monomer

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The main use of butadiene is____________________?


aAs a plasticiser for unsaturated polyester

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bIn the manufacture of synthetic rubber

✓


cAs an anti-skimming agent in paint

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dNone of these

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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?


aPolythene

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bPVC

✓


cRayon

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dPolyvinyl acetate

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View Answer PVC

Automobile steering wheels are normally made of__________________?


aCellulose acetate

✓


bCellulose nitrate

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cPVC

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dHigh density polythene

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View Answer Cellulose acetate

Tyres are made by___________________?


aInjection moulding

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bExtrusion

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cRotational moulding

✓


dCompression moulding

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View Answer Rotational moulding

Celluloid is__________________?


aCellulose acetate

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bRegenerated cellulose

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cCellulose nitrate

✓


dCellulose acetate butyrate

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View Answer Cellulose nitrate

Cation exchange resins used in water treatment is made from _____________ resin?


aUrea formaldehyde

✓


bEpoxy

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cAmino

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dPhenolic

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View Answer Urea formaldehyde

Fillers such as zinc oxide and carbon black are added to the crude natural rubber before vulcanisation in order to improve its_________________?


aElasticity

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bStrength

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cPlasticity

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dWeathering characteristics

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Silicone resins, which are highly water repellent and has good heat resistance cannot be used___________________?


aAs room temperature adhesive

✓


bAs grease & lubricant

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cHydraulic fluid for heat transfer

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dResin for lamination

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