Chemical Engineering MCQs

Page No. 703

A ‘unit process’ is exemplified by the___________________?


aDistillation

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bHydrogenation of oils

✓


cAbsorption

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dHumidification

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View Answer Hydrogenation of oils

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


aElectrolysis

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bElectrolytic reduction

✓


cElectrolytic oxidation

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dNone of these

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Alum is commercially produced from___________________?


aGypsum

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bFeldspar

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cGalena

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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

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bDibasic acid and the ring

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cDiamine and the dibasic acid

✓


dNone of these

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


a1 atm & 100°C

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b5 atm & 275°C

✓


c100 atm & 500°C

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d50 atm & 1000°C

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View Answer 5 atm & 275°C

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


a80

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b90

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c98

✓


d100

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View Answer 98

Styrene is produced from ethyl benzene by the process of__________________?


aDehydrogenation

✓


bOxidation

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cAlkylation

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dDehydration

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View Answer Dehydrogenation

Calcination of gypsum produces__________________?


aPlaster of Paris

✓


bSalt cake

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cNitre cake

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dLime

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View Answer Plaster of Paris

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


a20% oleum

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b65% oleum

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c78% H2SO4

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d98% H2SO4

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View Answer 98% H2SO4

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


aAvoid its decomposition

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bPrevent sulphonation of the monochlorobenzene by the acid catalyst

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cAchieve non-hygroscopic property

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dNone of these

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