Fuels and Combustion

A. 550
B. 750
C. 950
D. 1150

A. Higher amount of methane
B. Lower amount of hydrogen
C. Both A. and B.
D. Higher amount of both methane and hydrogen

A. 300
B. 2000
C. 5000
D. 10000

A. Less air for combustion
B. Correct amount of air for combustion
C. Too much air for combustion
D. Pulverised coal in boilers

A. Producer gas
B. Coal gas from underground gasification of coal
C. Refinery gases
D. None of these

A. Coke even gas yield increases
B. Tar yield increases
C. Hydrogen percentage in the coke oven gas decreases
D. Methane percentage in the coke oven gas increases

A. Fixed carbon and having a heating value around 13, 200 BTU/1b
B. Ash and heating value around 13, 200 BTU/1b
C. Fixed carbon and heating value around 132 BTU/1b
D. None of these

A. Presence of large quantity of hydrogen in the fuel
B. Low calorific value of the fuel
C. High sulphur content in the fuel
D. Lack of thorough mixing of fuel with air

A. Ammonium sulphate
B. Ammonium nitrate
C. Ammonium phosphate
D. None of these

A. CH4 (upto 90%)
B. C2H6
C. C3H8
D. H2