Chemical Engineering MCQs

Page No. 705

Catalytic oxidation-dehydrogenation of methyl alcohol produces__________________?


aFormaldehyde


bPhenol


cAcetone


dMaleic anhydride


View Answer Formaldehyde

A unit operation is exemplified by the process of ___________________?


aReduction


bDesorption


cNitration


dCombustion


View Answer Desorption

____________ is a polysaccharide?


aMaltose


bStarch


cSucrose


dGlucose


View Answer Starch

Exothermic neutralisation reaction between caustic soda and dodecylbenzene sulfonic acid produces sodium dodecylbenzene sulphate, which is a/an?


aExplosive


bSoap


cDetergent


dAnalgesic drug


View Answer Detergent

Superior quality laboratory apparatus is made of the _____________ glass having low thermal co-efficient of expansion & high chemical resistance?


aFlint


bSoda


cPyrex


dPotash


View Answer Pyrex

Use of chlorine in the treatment of sewage_________________?


aHelps in grease separation


bIncreases the biological oxygen demand (BOD)


cCauses bulking of activated sludge


dAids in flocculation



CaO is called__________________?


aQuick lime


bSlaked lime


cLimestone


dCalcite


View Answer Quick lime

Dry ice (solidified CO2) is used for the___________________?


aStorage & shipment of frozen foods and ice-creams


bLiquefaction of permanent gases


cLiquefaction of natural gas


dNone of these



______________ is used as a flux in the extraction of iron from iron ore (haematite) in blast furnace?


aBauxite


bLimestone


cQuartz


dManganese


View Answer Limestone

At very high concentration of enzymes, the rate of fermentation chemical reaction is _____________ the concentration of reactants?


aIndependent of


bDirectly proportional to


cInversely proportional to


dProportional to the square of


View Answer Independent of

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