Fuels and Combustion

Coal containing large quantity of _______________ are difficult to wash?

Byadmin March 7, 2019August 26, 2021

Coal containing large quantity of _______________ are difficult to wash?

A. Ash
B. Inherent mineral matter
C. Free impurities
D. Volatile matter

Fuels and Combustion

Gray King Assay and Swelling Index of a coal is a measure of its ____________________?

Gray King Assay and Swelling Index of a coal is a measure of its ____________________?

A. Swelling characteristics
B. Abradability
C. Agglutinating properties
D. Resistance to impact breakage

Read More Gray King Assay and Swelling Index of a coal is a measure of its ____________________?
CHEMICAL ENGINEERING | Fuels and Combustion

Fixed carbon in coal is defined as

Question: Fixed carbon in coal is defined as
[A].

that present in volatile matters.
[B].
the total quantity of carbon present in the coal.
[C].
hundred minus the percentage of volatile matter, ash and moisture.
[D].
the one which is present in the residue after combustion.

Answer: Option C

Explanation:

No answer description available for this question.

Read More Fixed carbon in coal is defined as
CHEMICAL ENGINEERING | Fuels and Combustion

In general, the limit of inflammability/explosion limit of fuel gases is widened by the

Question: In general, the limit of inflammability/explosion limit of fuel gases is widened by the
[A].

increase in gas pressure.
[B].
increase in temperature (i.e. preheating).
[C].
use of pure oxygen for combustion instead of air.
[D].
all (a), (b) & (c).

Answer: Option D

Explanation:

No answer description available for this question.

Read More In general, the limit of inflammability/explosion limit of fuel gases is widened by the
Fuels and Combustion

Cannel coal and boghead coal are the examples of _________________?

Cannel coal and boghead coal are the examples of _________________?

A. Humic coals
B. Liptobiolites
C. Sapropelic coals
D. None of these

Read More Cannel coal and boghead coal are the examples of _________________?
Fuels and Combustion

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_______?

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. Sulphide Coke
C. Coke Oven Gas
D. Pulverised coke

Read More 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_______?
Fuels and Combustion

“Micum Index” of a coke is a measure of its___________________?

“Micum Index” of a coke is a measure of its___________________?

A. Reactivity
B. Porosity
C. Bulk density
D. Hardness & strength

Read More “Micum Index” of a coke is a measure of its___________________?

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