Chemical Engineering MCQs

Page No. 731

Bio-degradable detergents ___________________?


aCan be readily oxidised


bPose problem in sewerage plant


cHave an isoparaffinic structure


dShould not be used as it spoils the cloth



Laboratory glass wares which reacts with hydrofluoric acid, are made of the ______________ glass?


aLead


bBorosilicate


cSoda lime


dAlkali silicate


View Answer Borosilicate

Polymethyl methacrylate (PMMA) is known as ____________________?


aBakelite


bTeflon


cPerspex


dNylon-6


View Answer Perspex

Function of thinner in a paint is to ______________________ ?


aAccelerate the oxidation of oil


bPrevent gelling of the paint


cSuspend pigments & dissolve film forming materials


dForm a protective film



Metallic soap is ________________ salt of fatty acids ?


aSodium


bPotassium


cBoth sodium & potassium


dAluminium or calcium


View Answer Aluminium or calcium

DDT stands for___________________?


aDiethyl-diphenyl-trichloromethane


bDichloro-diphenyl-trichloromethane


cdiphenyl-dichloro-trichloromethane


dDichloro-diphenyl-trichloroethane



Fish contains about _______________ percent oil ?


a5


b10


c20


d35


View Answer 20

Solvent extracted oil________________?


aHas low free fatty acid content


bIs odourless


cHas more of unsaturates


dNone of these


View Answer None of these

______________ is obtained as a by-product in the manufacture of sodium hydroxide using brine ?


aChlorine


bAmmonium chloride


cSodium carbonate


dSodium bi-carbonate


View Answer Chlorine

Phenol is mainly used____________________?


aTo produce benzene


bTo produce phenol formaldehyde


cTo produce polyester resin


dAs a plasticiser for unsaturated polyester



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