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


cIt is a liquid at room temperature


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


cAmmonia water


dNone of these


View Answer Urea

P2O5 content in superphosphate is about _____________ percent?


a30-35


b15-20


c65-70


d85-90


View Answer 15-20

Promoter used in NH3 synthesis catalyst is__________________?


aK2O


bSiO3


c V2O5


dU2O3


View Answer V2O5

Maximum stability of white phosphorous is at__________________?


aVery high pressure


bAtmospheric pressure


cRoom temperature


d> 600°C


View Answer > 600°C

Potassic fertilisers__________________?


aAre useful during early stage of the plant growth


bStimulate early growth and accelerate seeding


cHelp in development of starches of potatoes and grain


d None of these



Which is the most suitable fertiliser for paddy ?


a CAN


b Ammonium sulphate


cAmmonium nitrate


dSuperphosphate


View Answer Ammonium sulphate

Catalyst used in ammonia synthesis uses ____________ as a promoter?


aPt


bK2O


cAl2O3


dNi


View Answer K2O

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