Fuels and Combustion

A. Ash
B. Volatile matter
C. Sulphur (4-6%)
D. Moisture

A. High production of CO2
B. Low production of CO2
C. High production of CO
D. Both B. and C.

A. Air
B. Oxygen
C. Oxygen enriched air
D. None of these

A. Can give ammonia synthesis gas (H2 + N2)
B. Is a moving bed reactor
C. Cannot use coking coal
D. Operate at very high pressure

A. < 120
B. > 120
C. < 90
D. 90-110

A. Coke
B. Ammonia
C. Tar
D. Coke oven gas

A. Coke breeze
B. Soft coke
C. Colloidal fuels
D. Charcoal

A. Would require smaller combustion chamber
B. Produces very little of tar and gas on carbonisation
C. Ignites easily and burns with long smoky flame
D. All A., B. and C.

A. 10
B. 25
C. 50
D. 75

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