- (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
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- (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
- (A) Washing fine coal dust (< 0.5 mm size)
- (B) Washing lump coal (> 80 mm size)
- (C) Removing ash from the coal based on difference in specific gravity of coal and ash
- (D) All
- (A) Tar
- (B) Benzol
- (C) Ammonia
- (D) None of these
- (A) Storage in large heaps
- (B) Storage in compressed piles
- (C) Absence of porous or friable particles
- (D) All
- (A) Decreases
- (B) Increases
- (C) Remain same
- (D) May increase or decrease depending on the type of fuel
- (A) The gaseous fuel before combustion decreases
- (B) Combustion air decreases
- (C) Either the fuel or the air or both, increases
- (D) Either the fuel or the air does not affect
