18
48
8
80
✅ The correct answer is option A.
Fuel and Combustion MCQs
Which of the following can be made into briquettes without the use of a binder?
Lignite
Bituminous coal
Anthracite coal
None of these
✅ The correct answer is option A.
White flue gas (resembling steam) coming out of the chimney of a thermal power plant indicates that the fuel used in the boiler furnace is
Tar
Coke oven gas
Pitch
Pulverised coke
✅ The correct answer is option B.
Number of macrocomponents present in coal according to Stopes are
Four
Five
Six
Two
✅ The correct answer is option A.
Which of the following fuels is generally not used in thermal power plant boiler firing?
Furnace oil, light diesel oil and tar/PCM
Pulverised coking coal
Coal middling from washeries
B.F. gas, coke oven gas and L.converter gas
✅ The correct answer is option B.
Which of the following will generate maximum volume of product of complete combustion (Nm³/Nm³ of fuel) ?
Carburetted water gas
Blast furnace gas
Natural gas
Producers
✅ The correct answer is option C.
Low temperature oxidation of coal resulting from bad storage conditions does not decrease its
Caking power
Calorific value
Hydrogen content
Oxygen content
✅ The correct answer is option D.
__________ is used as jet engine fuel.
Petrol
Diesel
Kerosene
LPG
✅ The correct answer is option C.
(64-132) rank coal (ASTM) means a coal with 64%
Fixed carbon and having a heating value around 13, 200 BTU/1b
Ash and heating value around 13, 200 BTU/1b
Fixed carbon and heating value around 132 BTU/1b
None of these
✅ The correct answer is option A.
‘Mixed gas’ used in steel plants is a mixture of
B.F. gas and coke oven gas
Coke oven gas and converter gas
Coke oven gas and L.P.G
Blast furnace gas and naphtha vapor
✅ The correct answer is option A.