Chemical Engineering MCQs

Page No. 291

Calorific value of coal middling generated in coal washeries during washing of coal may be around _____________ Kcal/kg?


a1000


b4000


c6000


d8000


View Answer 4000

About _____________ Nm3 of air will be required for the complete combustion of 2Nm3 of CO?


a2


b3


c4


d5


View Answer 5

Fischer-Tropsch method aims at the ______________________?


aGasification of coal


bSynthesis of gasoline (from water gas)


cHydrogenation of coal to produce gasoline


dNone of these



In flue gas analysis by Orsat’s apparatus, carbon dioxide is absorbed by______________________?


aPotassium hydroxide


bDilute potassium carbonate


cCuprous chloride


dAlkaline pyrogallol solution


View Answer Potassium hydroxide

Net calorific value is the gross calorific value less the _______________ heat of water in the product of combustion when cooled to 15°C ?


aSensible


bLatent


cSensible and latent


dNone of these


View Answer Sensible and latent

Producer gas comprises mainly of _______________________?


aCO & N2


bCO & H2


cCO2 & N2


dCO2 & H2


View Answer CO & N2

Coke compared to the coal from which it has been made, contains ____________________?


aLess volatile matter


bMore carbon


cGreater percentage of ash


dAll A., B. and C.


View Answer All A., B. and C.

Main constituents of purified Lurgi gas are___________________?


aH2, CmHn & CO2


bCO, H2 & CH4


cCO2, O2 & CO


dN2, H2 & CO2


View Answer CO, H2 & CH4

Which of the following is coking ?


aVitrain


bFussain


cBoth A. & B.


dNeither A. nor B.


View Answer Vitrain

Compound coke ovens are those which can be heated by __________________?


aBoth steam and electrical power


bLean gas (e.g., B.F. gas)


cRich gas (e.g., coke oven gas)


dBoth B. and C.


View Answer Both B. and C.

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