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

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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

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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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