Fuels and Combustion

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

A. Is non-coking
B. Has a high volatile matter content and burns with a luminous smoky flame
C. Is a non-banded coal which can be ignited easily with a match stick or candle flame, hence is
so named
D. All A., B. and C.