Chemical Engineering MCQs

Page No. 308

Which of the following has the highest calorific value ?


aLignite


bSub-bituminous coal


cAnthracite


dPeat


View Answer Anthracite

Flue gas obtained on complete combustion of pure acetylene (a hydrocarbon fuel) will contain __________________?


aCO


bCO2


cH2O


dBoth B. & C.


View Answer Both B. & C.

Initial pressure of oxygen introduced into the ‘bomb’ of the bomb calorimeter for determination of calorific value of coal/fuel oil may be around _____________ atm?


a3-5


b25-30


c60-65


d95-100


View Answer 25-30

Which of the following has the highest heat of combustion ?


aH2


bCO


cCH4


dC2H6


View Answer C2H6

The calorific value of L.D. converter gas is about ____________ Kcal/Nm3?


a1800


b800


c4500


d10000


View Answer 1800

Abrasion index of blast furnace coke should be around _____________ percent?


a20


b35


c55


d80


View Answer 80

Power alcohol as compared to straight run gasoline has lower ________________?


aCalorific value


bOctane number


cSpecific gravity


dViscosity


View Answer Calorific value

Which of the following petrographic constituents of coal is non-coking ?


aVitrain


bClarain


cDurain


dFussain


View Answer Fussain

The reaction, C + CO2 ↔ 2CO, taking place during coal gasification is called the ______________ reaction?


aNeumann reversal


bShift conversion


cBoudouard


dReduction


View Answer Boudouard

Presence of phosphorous in metallurgical coal__________________?


aIs not undesirable


bReduces its calorific value


cBadly affects the quality of steel


dIncreases its caking power



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