Chemical Engineering MCQs

Page No. 713

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


aSolvay

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bOstwald’s

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cHaber’s

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dNone of these

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View Answer Ostwald’s

Pick out the wrong statement ?38533


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

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

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cLead azide is a popular military explosive

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

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Addition of calcium oxide to water produces___________________?


aExothermic heat

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bHissing sound

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cSlaked lime

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dAll A , B. & C .

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View Answer All A , B. & C .

Bromine is used in the preparation of___________________?


aFire extinguishing compounds

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bFire proofing agents

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cDyes and antiknock compounds

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dAll A , B. and C.

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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

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bSharp melting points

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cLow co-efficient of thermal expansion

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dCompressive strength much greater than their tensile strengths

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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

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b10-30

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c250-280

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d500-600

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View Answer 10-30

Pick out the wrong statement pertaining to the soap manufacture?


aTransparent soaps are made by cold process

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bOrganic pigments are used as colouring materials in the soap manufacture

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

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dColourless rosin is used in the manufacture of laundry soaps

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Pick out the wrong statement ?


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

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

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

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dContact process of sulphuric acid manufacture uses nickel as the catalyst

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


aSintering

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bAnnealing

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cShaping or forming

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dMelting

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View Answer Sintering

Pick out the wrong statement ?


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

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bPolymerisation temperature can modify the properties of SBR

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

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dNone of these

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View Answer None of these

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