Chemical Engineering MCQs

Page No. 10

Ammonium nitrate (is mixed with limestone) is not used as fertiliser as such, because______________________?


aIt is hygroscopic and explosive in nature

✓


bIt is highly acidic in nature

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cIt is a liquid at room temperature

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dIts nitrogen content is very less

✖



NPK means a ______________ fertiliser?


aMixed

✓


bPotassic

✖


cLiquid

✖


dSolid

✖


View Answer Mixed

Calcium ammonium nitrate (CAN) is__________________?


aA mixed fertiliser

✖


bA straight fertiliser

✖


cA complex fertiliser

✓


d Not a fertiliser; it is an explosive

✖


View Answer A complex fertiliser

Dehydration of ammonium carbamate produces__________________?


aUrea

✓


bBiuret

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cAmmonia water

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dNone of these

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View Answer Urea

P2O5 content in superphosphate is about _____________ percent?


a30-35

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b15-20

✓


c65-70

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d85-90

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View Answer 15-20

Promoter used in NH3 synthesis catalyst is__________________?


aK2O

✖


bSiO3

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c V2O5

✓


dU2O3

✖


View Answer V2O5

Maximum stability of white phosphorous is at__________________?


aVery high pressure

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bAtmospheric pressure

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cRoom temperature

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d> 600°C

✓


View Answer > 600°C

Potassic fertilisers__________________?


aAre useful during early stage of the plant growth

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bStimulate early growth and accelerate seeding

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cHelp in development of starches of potatoes and grain

✓


d None of these

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Which is the most suitable fertiliser for paddy ?


a CAN

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b Ammonium sulphate

✓


cAmmonium nitrate

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dSuperphosphate

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View Answer Ammonium sulphate

Catalyst used in ammonia synthesis uses ____________ as a promoter?


aPt

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bK2O

✓


cAl2O3

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dNi

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View Answer K2O

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