Chemical Engineering MCQs

Page No. 343

Which of the following is not a thermoplastic material ?


aEpoxy polymer


bPVC


cPolystyrene


dPolythene


View Answer Epoxy polymer

Identify the group in which all the polymers mentioned can be used to make fibres ?


aButadiene copolymers, Polyamides, Urea-formaldehyde


bCellulose derivatives, Polyisoprene, Polyethylene


cCellulose derivatives, Polyamides, Polyurethane


dPolypropylene, Poly vinyl chloride, Silicon



Nylon-6 is manufactured from _______________?


aCaprolactam


bAdipic acid and Hexamethylenediamine


cMaleic anhydride and Hexamethylenediamine


dSebacic acid and Hexamethylenediamine


View Answer Caprolactam

Epoxy resins (i.e., epoxide polymers) ?


aAre made by addition polymerisation reaction only


bContain an epoxy group (fig bellow) at the ends of the polymer


cAre cross-linked polymers only


dUse emulsion polymerisation methods



Which of the following polymers belong to the class of formaldehyde resin ?


aMelamine resins


bTeflon


cDacron


dNone of these


View Answer Melamine resins

The monomer for the production of neoprene rubber is_________________?


aAcetylene


bChloroprene


cIsoprene


dNone of these


View Answer Chloroprene

Condensation polymerisation of formaldehyde with _____________ does not produce phenolic resin?


aResorcinol


bPhenol


cPara-cresol


dMelamine


View Answer Melamine

Perspex can be used as a substitute of glass. Its monomer is__________________?


aMethyl methacrylate


bDMT


cButadiene


dTetrafluoroethylene


View Answer Methyl methacrylate

Acrylonitrile-butadiene-styrene (ABS) copolymer, which is produced by blending styreneacrylonitrile copolymer with butadiene based elastomer, is a/an__________________?


aRigid foam


bEngineering plastic


cThermosetting polymer


dSpongy rubber


View Answer Engineering plastic

Antioxidants are added to rubber to protect it from the attack of light, heat & atmospheric ozone. Which of the following is an antioxidant used in rubber ?


aCarbon


bAlkylated diphenyl amine


cThiokol


dMagnesium



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