Fuels and Combustion

A. H2, CmHn & CO2
B. CO, H2 & CH4
C. CO2, O2 & CO
D. N2, H2 & CO2

A. Vitrain
B. Fussain
C. Both A. & B.
D. Neither A. nor B.

A. Both steam and electrical power
B. Lean gas (e.g., B.F. gas)
C. Rich gas (e.g., coke oven gas)
D. Both B. and C.

A. Pitch
B. Fuel oil
C. Blast furnace gas
D. Bituminous coal

A. Light paraffinic fuel oils is equal to that of equivalent olefins
B. n-paraffin is lower than that of iso-paraffins of the same compounds
C. Light paraffinic fuel oils is higher than that of equivalent olefins
D. Light paraffinic fuel oils is lower than that of equivalent olefins

A. Fixed carbon
B. Total carbon
C. Hydrogen
D. Nitrogen

A. Less reactive
B. Stronger
C. Smaller in size
D. All A., B. & C.

A. Swelling characteristics
B. Abradability
C. Agglutinating properties
D. Resistance to impact breakage

A. 5
B. 10
C. 20
D. 35

A. Yield of coke oven gas is 290 Nm3 /ton dry coal
B. Volatile matter in coke is zero
C. Temperature maintained is 700°C
D. Yield of tar is about 3% of dry coal