Chemical Engineering MCQs

Page No. 329

Rain coats are made of__________________?


aNeoprene

✖


bPVC

✓


cPolyurethane

✖


dSBR

✖


View Answer PVC

Which of the following is not a natural fiber ?


aSilk

✖


bViscose rayon

✓


cWool

✖


dCotton

✖


View Answer Viscose rayon

Rayon is a ____________ fibre?


aCellulosic

✓


bPolyamide

✖


cPolyester

✖


dNatural

✖


View Answer Cellulosic

The starting material used for the manufacture of caprolactam is________________?


aEthyl benzene

✖


bCyclohexane

✓


cEthylene glycol

✖


dDMT

✖


View Answer Cyclohexane

Size range of polymer molecules varies from __________ meter?


a10-2 to 10-5

✓


b10-4 to 10-7

✖


c10-1 to 10-2

✖


d10-8 to 10-10

✖


View Answer 10-2 to 10-5

Polyhexamethylene adipamide is also known as______________?


aBakelite

✖


bNylon-66

✓


cEpoxy resin

✖


dSilicone rubber

✖


View Answer Nylon-66

Thermoplastic materials___________________?


aDo not soften on application of heat

✖


bAre heavily branched molecules

✖


cAre solvent insoluble

✖


dNone of these

✓


View Answer None of these

Cross linked polymers are__________________?


aThermoplastic

✖


bThermosetting

✓


cEither A. or B.

✖


dFibres only

✖


View Answer Thermosetting

Nylon-66 compared to nylon-6 has __________________?


aLower melting point

✖


bMore abrasion resistant properties

✓


cHigher hardness

✖


dAll A., B. and C.

✖



Unbreakable crockeries are made from ______________ polymers?


aPolystyrene

✓


bMelamine

✖


cPolystyrene

✖


dPolyurethane

✖


View Answer Polystyrene

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