Fuels and Combustion

A. Require smaller combustion chamber
B. Have high calorific value
C. Have high adiabatic flame temperature
D. None of these

A. Only O2
B. Both O2 and CO2
C. Both O2 and CO
D. All CO, CO2, and O2

A. Difference in gross & net calorific value of the coke oven gas
B. Free carbon content in tar
C. Yield percentage of coke
D. Yield of ammonia present in coke oven gas

A. 5
B. 25
C. 55
D. 80

A. Increases
B. Decreases
C. Remain constant
D. None of these

A. Pollution control aspect
B. Draught to be created
C. Limitation of constructional facilities
D. None of these

A. Fire point
B. Smoke point
C. Burning temperature
D. Kindling temperature

A. 6
B. 12
C. 18
D. 24

A. Producer gas
B. Water gas
C. Coke oven gas
D. Blast furnace gas

A. Is less liable to spontaneous combustion on storage
B. Is more difficult to ignite and produces a shorter flame
C. Requires smaller combustion space and less secondary air
D. None of these