Chemical Engineering MCQs

Page No. 306

Coke oven gas constitutes mainly of ____________________?


aH2 & CO


bH2 & CH4


cCH4 & CO


dH2 & CO2


View Answer H2 & CH4

Natural draft created by the chimney depends upon _____________________?


aTemperature of the flue gas


bIts height


cBoth A. & B.


dNeither A. nor B.


View Answer Both A. & B.

Coke oven gas produced by high temperature carbonisation of coal (as compared to that produced by low temperature carbonisation), has_________________?


aHigher calorific value


bLower hydrogen content


cBoth A. and B.


dNeither A. nor B.


View Answer Neither A. nor B.

Purity of coke means that, it is high in carbon and low in __________________?


aVolatiles


bAsh


cIron


dMoisture


View Answer Volatiles

Which of the following is not a ‘manufactured’ fuel ?


aLPG


bCoal briquettes


cTar


dColloidal fuels


View Answer Tar

Which of the following has the highest gross calorific value ?


aBlast furnace gas


bCoke oven gas


cCarburetted water gas


dOil refinery gas


View Answer Oil refinery gas

With increase in moisture content of coal, its_____________________?


aCalorific value increases sometimes


bBulk density always decreases


cClinkering tendency during combustion increases


dNone of these


View Answer None of these

Calorific value of tar is about _____________ Kcal/kg?


a8800


b12000


c14000


d16000


View Answer 8800

Orsat apparatus__________________?


aGives flue gas analysis on dry basis


bDetermines N2 in flue gas indirectly


cCan’t determine CO in flue gas, if it is < 0.2%


dAll A., B. & C.


View Answer All A., B. & C.

Shatter index of the coke is a measure of its___________________?


aStrength


bBulk density


cReactivity


dNone of these


View Answer Strength

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