A. Reactivity
B. Hardness
C. Strength
D. None of these
Critical Air Blast (CAB) value of coke is a direct measure of its__________________? Read More »
Fuels and Combustion A. Burns completely
B. Gives smokeless burning
C. Shows little or no fusing action
D. None of these
A particular coal is said to be free burning when it __________________? Read More »
Fuels and Combustion A. Carbon, hydrogen, nitrogen & sulphur
B. Carbon, ash, sulphur & nitrogen
C. Carbon, sulphur, volatile matter & ash
D. Carbon, volatile matter, ash & moisture
Ultimate analysis of coal determines its _______________ content? Read More »
Fuels and Combustion A. Proper fuel preparation
B. Keeg the flue gas exhaust temperature very high
C. Adopting efficient-fuel firing technique & equipment
D. Supplying correct quantity of combustion air
Higher efficiency in the combustion of solid fuel cannot be achieved by________________? Read More »
Fuels and Combustion A. Incomplete combustion
B. Dry gas/stack gas loss
C. Moisture loss
D. None of these
A. Incomplete combustion
B. Complete combustion
C. High oxygen in flue gas
D. None of these
A. Fischer-Tropsch
B. Bergius
C. Lurgi
D. None of these
____________ process is meant for direct hydrogenation of coal to produce liquid fuel? Read More »
Fuels and Combustion A. 11.5
B. 0.5
C. 23
D. 12
A. CO2
B. CO
C. O2
D. C
A. As moisture proof coating on fibres
B. As moth balls (insecticides)
C. As a fuel in furnaces
D. For making electrodes
Naphthalene recovered from coke oven gas is used___________________? Read More »
Fuels and Combustion