A. Non-caking coal
B. Caking coal
C. Coking coal
D. Pulverised coal
Related Mcqs:
- A travelling grate stoker is meant for the efficient burning of ______________ coal?
A. Caking
B. Pulverised
C. Non-caking
D. High ash - Which of the following accentuates clinkering trouble on furnace grate burning coal ?
A. Low reactivity of carbonised residue containing high proportions of iron & sulphur
B. Low forced draught and fuel bed temperature
C. Thick fire bed and preheated primary air
D. All A., B. and C. - During combustion of coal on grate, clinker formation is increased by the___________________?
A. Use of thick fire bed
B. Low fusion point of ash (< 1100° C)
C. Use of preheated primary air
D. All A., B. & C. - Which of the following fuels is generally not used in thermal power plant boiler firing ?
A. Furnace oil, light diesel oil and tar/PCM
B. Pulverised coking coal
C. Coal middling from washeries
D. B.F. gas, coke oven gas and L.D. converter gas - Which of the following gaseous fuels has the highest net calorific value (kcal/Nm3) ?
A. Producer gas
B. Carburetted water gas
C. Natural gas
D. Liquefied petroleum gas - Out of the following fuels, the difference between the net and gross calorific value is maximum in case of_________________?
A. Pitch
B. Fuel oil
C. Blast furnace gas
D. Bituminous coal - Out of the following fuels, the difference between gross and net calorific value will be minimum in case of___________________?
A. Coke oven gas
B. Water gas
C. Natural gas
D. Blast furnace gas - Which of the following fuels has the highest calorific value per unit mass (kcal/kg) ?
A. Coal
B. Kerosene
C. Natural gas
D. Furnace oil - Which of the following gaseous fuels is likely to have the highest gross calorific value ?
A. Sewage gas
B. LPG
C. Producer gas
D. Natural gas - Which of the following gaseous fuels has the lowest calorific value ?
A. Gobar gas
B. Refinery gas
C. Converter gas
D. Blast furnace gas
