Chemical Engineering MCQs

Page No. 306

Coke oven gas constitutes mainly of ____________________?


aH2 & CO

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bH2 & CH4

✓


cCH4 & CO

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dH2 & CO2

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View Answer H2 & CH4

Natural draft created by the chimney depends upon _____________________?


aTemperature of the flue gas

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bIts height

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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

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bLower hydrogen content

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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

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bCoal briquettes

✖


cTar

✓


dColloidal fuels

✖


View Answer Tar

Which of the following has the highest gross calorific value ?


aBlast furnace gas

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bCoke oven gas

✖


cCarburetted water gas

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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

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dNone of these

✓


View Answer None of these

Calorific value of tar is about _____________ Kcal/kg?


a8800

✓


b12000

✖


c14000

✖


d16000

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View Answer 8800

Orsat apparatus__________________?


aGives flue gas analysis on dry basis

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bDetermines N2 in flue gas indirectly

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

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dAll A., B. & C.

✓


View Answer All A., B. & C.

Shatter index of the coke is a measure of its___________________?


aStrength

✓


bBulk density

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cReactivity

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dNone of these

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View Answer Strength

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