Fuels and Combustion

A. Reduces its consumption in the furnace
B. Increases its consumption in the furnace
C. Does not affect its consumption in the furnace
D. Decreases its hardness and abrasion resistance

A. Lignite
B. Bituminous coal
C. Anthracite
D. High temperature coke (V.M < 0.5%)

A. Coke oven gas yield is more
B. Tar yield is less but free carbon in tar is more
C. Calorific value of coke oven gas is less
D. All A., B. and C.

A. Higher than
B. Lower than
C. Same as
D. None of these

A. More
B. Less
C. Equal
D. More or less; (depends on the state of fuel.)

A. A high rank coal
B. A coking coal
C. Can be used for gasification and steam generation
D. A black banded coal which burns with a non-smoky yellowish flame

A. Lurgi
B. Kopper-Totzek
C. Winkler
D. None of these

A. High calorific value
B. Better combustion
C. Smokeless burning
D. Less erosion on furnace walls

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

A. Pitch
B. Blast furnace gas
C. Petrol
D. Refinery gas