Which of the following has the highest flame velocity ?
Which of the following has the highest flame velocity ?
A. H2
B. CO
C. CH4
D. C2H6
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Fuel combustion is never cent per cent efficient due to___________________?
Fuel combustion is never cent per cent efficient due to___________________?A. Incomplete combustion
B. Dry gas/stack gas loss
C. Moisture loss
D. All A., B. and C.Caking index of the coal blend used for the manufacture of metallurgical coke should be around
Question: Caking index of the coal blend used for the manufacture of metallurgical coke should be around
[A].5 [B].
21 [C].
40 [D].
48 Answer: Option B
Explanation:
No answer description available for this question.
Coke oven gas burns with a yellowish flame, because of the presence of __________________?
Coke oven gas burns with a yellowish flame, because of the presence of __________________?A. CO2
B. CH4
C. H2
D. NH3A fuel containing carbon and carbon monoxide (but containing no hydrogen or its compounds) is burnt in pure oxygen at constant pressure. Its gross calorific value as compared to net calorific value will be_________________?
A fuel containing carbon and carbon monoxide (but containing no hydrogen or its compounds) is burnt in pure oxygen at constant pressure. Its gross calorific value as compared to net calorific value will be_________________?A. More
B. Less
C. Same
D. Data insufficient; can’t be predictedA coal having higher volatile matter content, has lower_________________?
A coal having higher volatile matter content, has lower_________________?A. Smoking tendency on burning
B. Coke oven gas yield on carbonisation
C. Chance of catching fire during storage in open space
D. Ignition temperatureHighly reactive coke have lower ___________________?
Highly reactive coke have lower ___________________?A. Porosity
B. Coke reactivity index (CRI)
C. Critical air blast (CAB) value
D. Both B. and C.