Chemical Engineering MCQs

Page No. 39

In _____________ converter for ammonia synthesis, the catalyst is arranged in the form of a single continuous bed?


aFauser-Montecatini


bClaude


cUhde


d Kellogg


View Answer Claude

Which of the following nitrogenous fertilisers has the highest percentage of nitrogen ?


aCalcium nitrate


bCalcium ammonium nitrate (CAN)


cUrea


dAmmonium sulphate


View Answer Urea

Superphosphate is manufactured by reacting phosphate rock with_____________________?


aAcetic acid


bSulphuric acid


cAluminium chloride


dNone of these


View Answer Sulphuric acid

In an ammonia plant, the purge off is essential to___________________?


aMaintain inert gas concentration within a limit


bRemove excess poisonous gases


cMaintain H2 : N2 ratio at 3 :1


dRemove uncondensed ammonia vapour



Ammonia synthesis gas is produced from natural gas by___________________?


aThermal cracking


bSteam reforming


cPartial oxidation


dHydrogenation


View Answer Steam reforming

Chemical formula of biuret is_________________?


a NH2.CO.NH2


bNH3.COO.NH3


cNH2CONHCONH2


dNH4COONH2


View Answer NH2CONHCONH2

Heating of ortho-phosphoric acid to 250°C produces___________________?


aMeta-phosphoric acid


bPyrophosphoric acid


cNo change in it


dNone of these


View Answer Pyrophosphoric acid

Potassic fertilisers do not promote the development of ______________________?


aStems & leaves during early stage of plant growth


bStarches of potatoes & grains


cSugar of fruits & vegetables


dFibrous materials of plants



Nitrogen content in ammonium sulphate (a fertiliser) is around ______________ percent?


a5


b 20


c 50


d65


View Answer 20

Dehydration of ammonium carbamate to yield urea is a/an __________________ reaction?


aExothermic


b Endothermic


c Autocatalytic


dCatalytic


View Answer Endothermic

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