Fuels and Combustion

A. Calorific value increases
B. Caking properties diminish
C. Swelling during carbonisation becomes excessive
D. None of these

A. Increase in gas pressure
B. Increase in temperature (i.e. preheating)
C. Use of pure oxygen for combustion instead of air
D. All A., B. & C.

A. Cyclone separator
B. Wet packed scrubber
C. Electrostatic precipitator
D. Washing with monoethanolamine

A. Coal
B. Furnace oil
C. Natural gas
D. Naphtha

A. Fast & high
B. Slow & low
C. Slow & high
D. Fast & slow

A. N2
B. CO
C. CO2
D. H2

A. Caking
B. Pulverised
C. Non-caking
D. High ash

A. Moving
B. Fixed
C. Fluidised
D. Entrained

A. The ratio of its percentage of fixed carbon to that of volatile matter
B. Helpful in estimation of its rank
C. Both A. and B.
D. Neither A. nor B.

A. Its pulverisation (as it requires more power)
B. Combustion of fire slacks on the grates
C. Handling (e.g. when emptying wagons)
D. None of these