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

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bClaude

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cUhde

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d Kellogg

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View Answer Claude

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


aCalcium nitrate

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bCalcium ammonium nitrate (CAN)

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cUrea

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dAmmonium sulphate

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View Answer Urea

Superphosphate is manufactured by reacting phosphate rock with_____________________?


aAcetic acid

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bSulphuric acid

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cAluminium chloride

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dNone of these

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View Answer Sulphuric acid

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


aMaintain inert gas concentration within a limit

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bRemove excess poisonous gases

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cMaintain H2 : N2 ratio at 3 :1

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dRemove uncondensed ammonia vapour

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Ammonia synthesis gas is produced from natural gas by___________________?


aThermal cracking

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bSteam reforming

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cPartial oxidation

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dHydrogenation

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View Answer Steam reforming

Chemical formula of biuret is_________________?


a NH2.CO.NH2

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bNH3.COO.NH3

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cNH2CONHCONH2

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dNH4COONH2

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View Answer NH2CONHCONH2

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


aMeta-phosphoric acid

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bPyrophosphoric acid

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cNo change in it

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dNone of these

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View Answer Pyrophosphoric acid

Potassic fertilisers do not promote the development of ______________________?


aStems & leaves during early stage of plant growth

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bStarches of potatoes & grains

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cSugar of fruits & vegetables

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dFibrous materials of plants

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


a5

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b 20

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c 50

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d65

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View Answer 20

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


aExothermic

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b Endothermic

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c Autocatalytic

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dCatalytic

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View Answer Endothermic

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