Chemical Engineering MCQs

Page No. 318

The average molecular weight of a flue gas having the composition by volume as CO2 = 25%, O2 = 25%, N2 = 50% will be___________________?


a27.6


b23


c47.3


d42.9


View Answer 23

Optimum preheating temperature for pitch creosote mixture (PCM) which is also termed as C.T.F-200, before atomisation through burners is_________________?


a200 °F


b200 °C


c200 °K


d200 °R


View Answer 200 °F

Gross calorific value will be equal to the net calorific value for __________________?


aH2


bC2H2


cCO


dC2H6


View Answer CO

Which of the following is not endothermic ?


aCracking


bReforming


cGasification


dPartial oxidation


View Answer Partial oxidation

Cannel coal and boghead coal are the examples of _________________?


aHumic coals


bLiptobiolites


cSapropelic coals


dNone of these


View Answer Sapropelic coals

Main constituent of the gas produced from a gobar gas plant is___________________?


aCO2


bCH4


cH2


dCO


View Answer CH4

Caking index of the coal blend used for the manufacture of metallurgical coke should be around__________________?


a5


b21


c40


d48


View Answer 21

‘Wind loss’ resulting from unscientific storage of coal may be the order of about _____________ percent?


a2.5


b7.5


c10.5


d14.5


View Answer 2.5

Laboratory gas is obtained by the cracking of____________________?


aGasoline


bDiesel


cFuel oil


dKerosene


View Answer Kerosene

Coal is pulverised before burning in large capacity boiler furnaces mainly to____________________


aEnsure its complete combustion


bFacilitate easy ash removal


cEnhance its calorific value


dProvide trouble free operation



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