Chemical Engineering MCQs

Page No. 323

Contact lenses for eyes are made of Perspex, which is nothing but_______________?


apoly-methyl-methacrylate

✓


bPolystyrene

✖


cUnsaturated polyester

✖


dPolypropylene

✖



Which of the following is not a polyolefin ?


aPolystyrene

✖


bPolypropylene

✖


cNeoprene

✓


dNone of these

✖


View Answer Neoprene

Vulcanisation of raw rubber makes it__________________?


aSoft

✖


bLess elastic

✓


cPlastic

✖


dTacky

✖


View Answer Less elastic

Poly-methyl-methacrylate, which is an acrylic resin, is also called ___________________?


aThiokol

✖


bPlexiglass or Lucite

✓


cDacron

✖


dTeflon

✖


View Answer Plexiglass or Lucite

Alkyd resin cannot be used for making_________________?


aPlasticiser

✖


bPaint & varnish

✖


cFibers

✓


dFilm forming materials

✖


View Answer Fibers

Buna-N is also called__________________?


aButyl rubber

✖


bNitrile rubber

✓


cNeoprene

✖


dThiokol

✖


View Answer Nitrile rubber

Molecular weight of polymers are in the range of__________________?


a10 to 103

✖


b102-107

✓


c107-109

✖


d109-1011

✖


View Answer 102-107

Nitrile rubber is produced by the polymerisation of_________________?


aAcrylonitrile & butadiene

✓


bAcrylonitrile & styrene

✖


cIsobutylene & isoprene

✖


dNone of these

✖



Epoxy resin is____________________?


aNot used for surface coating

✖


bA good abrasive

✓


cAn elastomer

✖


dA polyester

✖


View Answer A good abrasive

Lavatory cisterns are normally made of ________________?


aExpanded polystyrene

✓


bSaturated polyester

✖


cPerspex

✖


dPVC

✖


View Answer Expanded polystyrene

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