Chemical Engineering MCQs

Page No. 308

Which of the following has the highest calorific value ?


aLignite

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bSub-bituminous coal

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cAnthracite

✓


dPeat

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View Answer Anthracite

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


aCO

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bCO2

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cH2O

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dBoth B. & C.

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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

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b25-30

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c60-65

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d95-100

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View Answer 25-30

Which of the following has the highest heat of combustion ?


aH2

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bCO

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cCH4

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dC2H6

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View Answer C2H6

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


a1800

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b800

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c4500

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d10000

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View Answer 1800

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


a20

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b35

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c55

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d80

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View Answer 80

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


aCalorific value

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bOctane number

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cSpecific gravity

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dViscosity

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View Answer Calorific value

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


aVitrain

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bClarain

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cDurain

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dFussain

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View Answer Fussain

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


aNeumann reversal

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bShift conversion

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cBoudouard

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dReduction

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View Answer Boudouard

Presence of phosphorous in metallurgical coal__________________?


aIs not undesirable

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bReduces its calorific value

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cBadly affects the quality of steel

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dIncreases its caking power

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