Chemical Engineering MCQs

Page No. 38

Fertiliser value of a nitrogenous fertiliser is expressed in terms of its ______________ content?


aN2


bKNO3


cNO2


dNHO3


View Answer N2

Though kinetics of ammonia synthesis dictates the use of low temperature for high equilibrium conversion, yet it is kept moderately high (550°C), because at low temperature___________________?


aRate of reaction is very low


bVery high pressure is required resulting in costly pressure vessel


cSpace velocity of gas is very low resulting in decreased conversion


dNone of these



Triple superphosphate which contains about 46% P2O5 is produced by the reaction of phosphate rock with ortho phosphoric acid of_____________ percent concentration?


a 25-28


b52-54


c75-80


d> 98


View Answer 52-54

Vapor phase reaction of ammonia & nitric acid to produce ammonium nitrate is termed as the _______________ process?


aHaber’s


bStengel


cLe-chatelier’s


dDu-pont’s


View Answer Stengel

Triple superphosphate is chemically represented as_____________________?


aCaF2.3Ca3(PO4)2


b3Ca3(PO4)2


cCa(PO3)2


d Ca(H2PO4)2


View Answer CaF2.3Ca3(PO4)2

Neutralisation of nitric acid with ammonia to produce ammonium nitrate is a/an _______________________ reaction?


aCatalytic


bEndothermic


cExothermic


dAutocatalytic


View Answer Exothermic

Reaction of dilute sulphuric acid with phosphate rock produces ____________________?


aPhosphoric acid


bSuperphosphate


cTriple superphosphate


dGypsum


View Answer Phosphoric acid

Reaction of phosphate rock with 98% H2SO4 produces ______________________?


a Ortho-phosphoric acid


bSuperphosphate


cWhite phosphorous


dNone of these



Ammonia synthesis gas is produced from fuel oil by _________________?


a Steam reforming


bHydro-cracking


cPartial oxidation


d Hydrogenation


View Answer Partial oxidation

Vetrocoke solution is_________________?


aA mixture of K2CO3 and As2O3


bK2SO4


cA mixture of Na2CO3 and As2O3


dNa2SO4



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