Fuels and Combustion MCQs

469 MCQs  — Chemical Engineering MCQs  (Page 31 of 47)

Attempt Fuels and Combustion Quiz
Blast furnace gas is a very poisonous gas because of its predominantly high _______________ content?
A. H2o
B. Co2
C. Co
D. Ch4
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The weathering index of a coal________________?
A. Gives an idea of the fusion temperature of ash
B. Is related to its calorific value
C. Is a measure of its size stability, when stored & exposed to weather
D. Is a measure of its caking tendency
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Which of the following coke has the least percentage of ash ?
A. Petroleum coke
B. Beehive coke
C. Foundry coke
D. Metallurgical coke
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Steam is intermittently admitted into the fuel bed during the production of producer gas to__________________?
A. Convert co to co2
B. Increase the combustion rate
C. Increase the gas production rate
D. Minimise the chances of clinker formation
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Height of coke oven is limited (say maximum upto 7 metres) mainly by the_____________________?
A. Problem of uniform heating along its height
B. Structural strength of silica bricks
C. Problem in door cleaning
D. Buckling of ram of pusher car at the time of coke pushing
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Gas yield in the Kopper-Totzek coal gasifier is about ______________ Nm3/ton coal (ash = 35%)?
A. 150
B. 1500
C. 3500
D. 5000
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Main use of soft coke is as _______________ fuel?
A. Domestic
B. Blast furnace
C. Foundry
D. None of these
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A coal that softens and fuses on heating is_________________?
A. Classified
B. Carbonised
C. Caking
D. Non-caking
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During the carbonisation of coal__________________?
A. All tar is evolved at 700°c
C. Hard semi-coke starts shrinking at 600°c
D. All a., b. and c.
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Which of the following coal gasification processes will produce gas having maximum methane content ?
A. Winkler process
B. Lurgi process
C. Kopper-totzek process
D. All can produce same methane content
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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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