- (A) Lignite
- (B) Bituminous coal
- (C) Semi-anthracite
- (D) Anthracite
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- (A) Blast furnace coke
- (B) Gasoline
- (C) Natural gas
- (D) Wood charcoal
- (A) 18
- (B) 48
- (C) 8
- (D) 80
- (A) Fuel consumption for the same heat load
- (B) Stack gas temperature
- (C) Percentage of oxygen in flue gases
- (D) All
- (A) Inherent impurities
- (B) Adhering impurities
- (C) Mineral matter
- (D) Both
- (A) Low preheat of air
- (B) Fine grinding
- (C) High excess air
- (D) All
- (A) CO & H2
- (B) CO & N2
- (C) CO2 & H2
- (D) CH4 & H2
- (A) Hot scarfing of steel slabs
- (B) Mixing with blast furnace gas
- (C) Coke oven battery heating
- (D) Steel ladle drying
- (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
