L.D. converter gas (produced in steel plant) comprises mainly of ___________________?
A. CO (upto 65%) & CO2
B. CO2 & H2
C. CO & O2
D. CO2 & O2
Fuels and Combustion
Highly caking coals_____________________?
Highly caking coals_____________________?
A. Produce weak coke
B. Produce strong coke
C. May damage the coke oven walls during carbonisation
D. Both B. and C.
The hottest part of the flame lies in its _______________ zone?
The hottest part of the flame lies in its _______________ zone?
A. Non-luminous
B. Luminous
C. Yellow
D. Unburnt gases
The average molecular weight of a flue gas having the composition by volume as CO2 = 25%, O2 = 25%, N2 = 50% will be___________________?
The average molecular weight of a flue gas having the composition by volume as CO2 = 25%, O2 = 25%, N2 = 50% will be___________________?
A. 27.6
B. 23
C. 47.3
D. 42.9
Optimum preheating temperature for pitch creosote mixture (PCM) which is also termed as C.T.F-200, before atomisation through burners is_________________?
Optimum preheating temperature for pitch creosote mixture (PCM) which is also termed as C.T.F-200, before atomisation through burners is_________________?
A. 200 °F
B. 200 °C
C. 200 °K
D. 200 °R
Gross calorific value will be equal to the net calorific value for __________________?
Gross calorific value will be equal to the net calorific value for __________________?
A. H2
B. C2H2
C. CO
D. C2H6
Which of the following is not endothermic ?
Which of the following is not endothermic ?
A. Cracking
B. Reforming
C. Gasification
D. Partial oxidation
Cannel coal and boghead coal are the examples of _________________?
Cannel coal and boghead coal are the examples of _________________?
A. Humic coals
B. Liptobiolites
C. Sapropelic coals
D. None of these
Main constituent of the gas produced from a gobar gas plant is___________________?
Main constituent of the gas produced from a gobar gas plant is___________________?
A. CO2
B. CH4
C. H2
D. CO
Caking index of the coal blend used for the manufacture of metallurgical coke should be around__________________?
Caking index of the coal blend used for the manufacture of metallurgical coke should be around__________________?
A. 5
B. 21
C. 40
D. 48