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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