1000+ Fuels and Combustion Online Test Questions & Answers - 1
Question: 1
The cooling medium used in dry quenching of coke is
(A) air
(B) carbon dioxide
(C) nitrogen
(D) phenolic water
Ans: C
nitrogen
Question: 2
Which of the following is not a by-product fuel?
(A) refinery gas
(B) coke oven gas
(C) blast furnace gas
(D) producer gas
Ans: D
producer gas
Question: 3
Out of the following, the lowest excess air will be required by the _____ burner.
(A) low pressure gas
(B) high pressure gas
(C) high pressure oil
(D) coal
Ans: B
high pressure gas
Question: 4
Which of the following fuels is the best for burning on chain grate stoker?
(A) pulverised coal
(B) coking coal
(C) caking coal
(D) non-caking coal
Ans: D
non-caking coal
Question: 5
Fixed carbon in coal is defined as
(A) the one which is present in the residue after combustion
(B) hundred minus the percentage of volatile matter, ash and moisture
(C) the total quantity of carbon present in the coal
(D) that present in volatile matters
Ans: B
hundred minus the percentage of volatile matter, ash and moisture
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