Chemical Engineering MCQs

Page No. 703

A ‘unit process’ is exemplified by the___________________?


aDistillation


bHydrogenation of oils


cAbsorption


dHumidification


View Answer Hydrogenation of oils

The metallic aluminium is obtained from pure alumina in the presence of fused cryolite by_________________?


aElectrolysis


bElectrolytic reduction


cElectrolytic oxidation


dNone of these



Alum is commercially produced from___________________?


aGypsum


bFeldspar


cGalena


dBauxite


View Answer Bauxite

In nylon-66, the first and second numbers (i.e., 6) respectively designate the number of carbon atoms present in the__________________?


aDiamine and the ring


bDibasic acid and the ring


cDiamine and the dibasic acid


dNone of these



Ethylene oxide is produced by oxidation of ethylene in presence of AgO catalyst at __________________?


a1 atm & 100°C


b5 atm & 275°C


c100 atm & 500°C


d50 atm & 1000°C


View Answer 5 atm & 275°C

Conversion of SO2 to SO3 in Monsanto 4-pass converter is about ____________________ percent?


a80


b90


c98


d100


View Answer 98

Styrene is produced from ethyl benzene by the process of__________________?


aDehydrogenation


bOxidation


cAlkylation


dDehydration


View Answer Dehydrogenation

Calcination of gypsum produces__________________?


aPlaster of Paris


bSalt cake


cNitre cake


dLime


View Answer Plaster of Paris

Which is the most efficient absorbent for SO3 out of the following ?


a20% oleum


b65% oleum


c78% H2SO4


d98% H2SO4


View Answer 98% H2SO4

DDT should not be allowed to come in contact with iron (during its manufacture) to _______________?


aAvoid its decomposition


bPrevent sulphonation of the monochlorobenzene by the acid catalyst


cAchieve non-hygroscopic property


dNone of these



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