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


bProducer


c Natural


dCoal


View Answer Natural

Commercial fertilisers are available mostly in the form of__________________?


aPowder


bGranules


cLumps


dFlakes


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


cTo lessen the effect of excessive potash application


dNone of these



Ammonia synthesis reaction is______________________?


aExothermic


bEndothermic


cAutocatalytic


dNone of these


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


b Tricresyl phosphate


cFluorapatite


d Superphosphate



HPO3 is the chemical formula of ______________ phosphoric acid?


aPyro


bOrtho


c Meta


dNone of these


View Answer Meta

Reaction of ______________ acid with phosphate rock produces superphosphates?


aHydrochloric


bSulphuric


cNitric


dPhosphoric


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


b250-400


c1000-1200


d800-900


View Answer 250-400

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


aLurgi (high pressure) gasifier


bKopper-Totzek gasifier


cGasifier working at 20 atm


dGasifier working at 40 atm



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