Chemical Engineering MCQs

Page No. 9

A fertiliser plant is classified as a gas based fertiliser plant, when it uses ______________ gas as a source of hydrogen for the manufacture of ammonia?


aCoke oven

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bProducer

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c Natural

✓


dCoal

✖


View Answer Natural

Commercial fertilisers are available mostly in the form of__________________?


aPowder

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bGranules

✓


cLumps

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dFlakes

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View Answer Granules

Nitrogenous fertiliser is required__________________?


aDuring the early stage of growth to promote development of stem and leaves

✓


bFor accelerating fruit formation in later stage of growth

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cTo lessen the effect of excessive potash application

✖


dNone of these

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Ammonia synthesis reaction is______________________?


aExothermic

✓


bEndothermic

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cAutocatalytic

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dNone of these

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View Answer Exothermic

During nitric acid manufacture, catalytic oxidation of ammonia at 800°C in presence of platinum catalyst produces nitrogen oxide. Conversion of NH3 to NO is about ______________ percent?


a38

✖


b68

✖


c82

✖


d98

✓


View Answer 98

(CH3 C6 H4)3 PO4 is the chemical formula of__________________?


aTriple superphosphate

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b Tricresyl phosphate

✓


cFluorapatite

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d Superphosphate

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HPO3 is the chemical formula of ______________ phosphoric acid?


aPyro

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bOrtho

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c Meta

✓


dNone of these

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View Answer Meta

Reaction of ______________ acid with phosphate rock produces superphosphates?


aHydrochloric

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bSulphuric

✓


cNitric

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dPhosphoric

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View Answer Sulphuric

Conversion of yellow phosphorous to red phosphorous is done by heating it in covered retorts at ____________ °C in absence of air?


a50-80

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b250-400

✓


c1000-1200

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d800-900

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View Answer 250-400

Which of the following gasifiers can be attached to coal based fertiliser plants ?


aLurgi (high pressure) gasifier

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bKopper-Totzek gasifier

✓


cGasifier working at 20 atm

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dGasifier working at 40 atm

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