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.Management Sciences
Category: Fuels and Combustion
The ratio of maximum adiabatic flame temperature in air to that in pure oxygen is always___________________?
0
A. 1
B. < 1
C. > 1
D. Unpredictable
Which of the following is not endothermic ?
A. Cracking
B. Reforming
C. Gasification
D. Partial oxidation
Grindability index of a coal is 100. It implies that the ___________________?
A. Coal can be pulverised with great difficulty
B. Coal can’t be pulverised
C. Coal can be easily pulverised
D. Power consumption in grinding the coal will be very high
Gray King Assay and Swelling Index of a coal is a measure of its ____________________?
A. Swelling characteristics
B. Abradability
C. Agglutinating properties
D. Resistance to impact breakage
Light oil whose major component is Benzol, is obtained by the distillation of crude tar in the temperature range of _____________ °C?
A. 80-170
B. 200-300
C. 250-270
D. 280-300
Main constituents of Benzol are ____________________?
A. Benzene, toluene & xylene
B. Tar & creosote
C. Ammonia & phenol
D. Anthracene & phenol
Which of the following is the most reactive (as regards the formation of CO + H2 from C + H2O) ?
A. Blast furnace coke
B. Low temperature coke
C. Anthracite coal
D. Sub-bituminous coal
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