Chemical Engineering MCQs

Page No. 713

____________ process is used for the commercial production of nitric acid by the catalytic oxidation of ammonia ?


aSolvay


bOstwald’s


cHaber’s


dNone of these


View Answer Ostwald’s

Pick out the wrong statement ?38533


aLow intensity explosives are also called propellants, whereas high intensity explosive are called detonators


bGun powder comprises of 75% salt petre, 15% charcoal and 10% sulphur


cLead azide is a popular military explosive


dTNT is a hygroscopic explosive having very high melting point and is non-toxic to human being



Addition of calcium oxide to water produces___________________?


aExothermic heat


bHissing sound


cSlaked lime


dAll A , B. & C .


View Answer All A , B. & C .

Bromine is used in the preparation of___________________?


aFire extinguishing compounds


bFire proofing agents


cDyes and antiknock compounds


dAll A , B. and C.


View Answer All A , B. and C.

Pick out the wrong statement pertaining to the properties of glasses. Glasses generally have___________________?


aHigh electrical insulation properties


bSharp melting points


cLow co-efficient of thermal expansion


dCompressive strength much greater than their tensile strengths


View Answer Sharp melting points

90% of the caprolactam is converted to nylon-6 on its condensation polymerisation in the reactor maintained at _____________ °C ?


a< 0


b10-30


c250-280


d500-600


View Answer 10-30

Pick out the wrong statement pertaining to the soap manufacture?


aTransparent soaps are made by cold process


bOrganic pigments are used as colouring materials in the soap manufacture


cBoth laundry as well as toilet soaps are manufactured by hot process


dColourless rosin is used in the manufacture of laundry soaps



Pick out the wrong statement ?


aChamber process of sulphuric acid manufacture produces pure acid of concentration < 80%


bContact process of sulphuric acid manufacture produces pure acid of concentration ≥ 98%


c75% oleum can be produced by distillation of 20% oleum


dContact process of sulphuric acid manufacture uses nickel as the catalyst



Which of the following processes is absent in glass manufacturing process ?


aSintering


bAnnealing


cShaping or forming


dMelting


View Answer Sintering

Pick out the wrong statement ?


aCold rubber (SBR) is superior as compared to hot rubber (SBR)


bPolymerisation temperature can modify the properties of SBR


cProduction of cold SBR employs lower pressure as compared to that of hot SBR


dNone of these


View Answer None of these

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