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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