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Chemical Engineering - Fuels and Combustion

Exercise : Fuels and Combustion - Section 7
16.
Which of the following can be made into briquettes without the use of a binder ?
lignite
Bituminous coal
Anthracite coal
None of these
Answer: Option
Explanation:
No answer description is available. Let's discuss.
17.
As the equilibrium moisture content of the coal increases, its
calorific value increases.
swelling number decreases.
swelling number increases.
bulk density decreases.
Answer: Option
Explanation:
No answer description is available. Let's discuss.
18.
Which of the following is a measure of the agglutinating (i.e., binding) property of coal?
Thickness of plastic layer
Caking index
Swelling index
Gray-king index
Answer: Option
Explanation:
No answer description is available. Let's discuss.
19.
During coal carbonisation process, the conversion of semi-coke to coke is accompanied by an increase in the __________ of the mass.
density
porosity
electrical resistivity
none of these
Answer: Option
Explanation:
No answer description is available. Let's discuss.
20.
Blast furnace gas burns with a bluish flame, because of the presence of
CO
CH4
CO2
S
Answer: Option
Explanation:
No answer description is available. Let's discuss.
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