Fuels and Combustion MCQs

469 MCQs  — Chemical Engineering MCQs  (Page 24 of 47)

Attempt Fuels and Combustion Quiz
High temperature in gasification of coal favours________________?
A. High production of co2
B. Low production of co2
C. High production of co
D. Both b. and c.
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Assam (India) coals suffers mainly from the disadvantage of high ______________ content?
A. Ash
B. Volatile matter
C. Sulphur (4-6%)
D. Mositure
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Abel apparatus is used for those oils, whose flash points are ___________°F?
A. < 120
B. > 120
C. > 280
D. 300-600
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Which of the following is the most reactive (as regards the formation of CO + H2 from C + H2O) ?
A. Blast furnace coke
B. Low temperature coke
C. Anthracite coal
D. Sub-bituminous coal
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In Orsat’s apparatus, ammoniacal cuprous chloride is used for selectivity absorbing________________?
A. Co
B. Co2
C. O2
D. H2o
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Which of the following fuel gases has the highest calorific value ?
A. Natural gas
B. Coal bed methane (cbm)
C. Liquefied petroleum gas (lpg)
D. Sewage gas
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Which of the following is not used as a binder in coal briquetting ?
A. Tar
B. Molasses
C. Pitch
D. Line
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As the equilibrium moisture content of the coal increases, its___________________?
A. Calorific value increases
B. Swelling number decreases
C. Swelling number increases
D. Bulk density decreases
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White flue gas (resembling steam) coming out of the chimney of a thermal power plant indicates that the fuel used in the boiler furnace is_________________?
A. Tar
B. Coke oven gas
C. Pitch
D. Pulverised coke
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Spontaneous combustion of coal on storage results due to___________________?
A. Inadequate ventilation
B. Low temperature oxidation
C. Storage in large heaps with small surface to volume ratio
D. All a., b. and c.
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Word of the Day
23 Jul
Aisle
a passage between rows of seats in a building such as a church or theatre, an aircraft, or train.
طویل تنگ راستہ، نشتوں کے درمیان راستہ

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