‘Fat’ coal means a coal having ___________________?
A. Low calorific value
B. High volatile matter
C. Low ash content
D. Non smoking tendency
Fuels and Combustion
Naphthalene is removed from coke oven gas by________________?
Naphthalene is removed from coke oven gas by________________?
A. Scrubbing with wash oil (a petroleum product)
B. Adsorbing on bog iron bed
C. Absorbing in vetro-coke solution
D. None of these
Octane number of 2, 2, 4 – trimethyl pentane is __________________?
Octane number of 2, 2, 4 – trimethyl pentane is __________________?
A. 0
B. 100
C. In between 0 and 100
D. More than 100
Which of the following has the highest calorific value ?
Which of the following has the highest calorific value ?
A. Lignite
B. Sub-bituminous coal
C. Anthracite
D. Peat
Flue gas obtained on complete combustion of pure acetylene (a hydrocarbon fuel) will contain __________________?
Flue gas obtained on complete combustion of pure acetylene (a hydrocarbon fuel) will contain __________________?
A. CO
B. CO2
C. H2O
D. Both B. & C.
Initial pressure of oxygen introduced into the ‘bomb’ of the bomb calorimeter for determination of calorific value of coal/fuel oil may be around _____________ atm?
Initial pressure of oxygen introduced into the ‘bomb’ of the bomb calorimeter for determination of calorific value of coal/fuel oil may be around _____________ atm?
A. 3-5
B. 25-30
C. 60-65
D. 95-100
Which of the following has the highest heat of combustion ?
Which of the following has the highest heat of combustion ?
A. H2
B. CO
C. CH4
D. C2H6
The calorific value of L.D. converter gas is about ____________ Kcal/Nm3?
The calorific value of L.D. converter gas is about ____________ Kcal/Nm3?
A. 1800
B. 800
C. 4500
D. 10000
Abrasion index of blast furnace coke should be around _____________ percent?
Abrasion index of blast furnace coke should be around _____________ percent?
A. 20
B. 35
C. 55
D. 80
Power alcohol as compared to straight run gasoline has lower ________________?
Power alcohol as compared to straight run gasoline has lower ________________?
A. Calorific value
B. Octane number
C. Specific gravity
D. Viscosity