Fixed carbon in coal is defined as
A. that present in volatile matters
B. the total quantity of carbon present in ash
C. hundred minus the percentage of volatile matter ash & moisture
D. the one which is present in the residue after ash formed
Answer: Option C
Related Questions on Fuels, Furnace and Refractories Technology
How much is the percentage of fixed carbon in semi-anthracite?
A. 65 - 70%
B. 45 - 50%
C. 80 - 90%
D. 55 - 65%
How much is the percentage of fixed carbon in lignite?
A. Up to 30
B. Up to 60
C. Up to 90
D. Up to 80
How much is the calorific value of lignite coal?
A. 5000 kcal/kg
B. 8000 kcal/kg
C. 7000 kcal/kg
D. 9000 kcal/kg
How much is the calorific value of semi-anthracite coal?
A. 85 to 88 kcal/kg
B. 850 to 880 kcal/kg
C. 85000 to 88000 kcal/kg
D. 8500 to 8800 kcal/kg
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