A. CO
B. CO2
C. H2
D. CH4
Related Mcqs:
- Gross heating value of coal is ______________ the net heating value?
A. Higher than
B. Lower than
C. Same as
D. None of these - Gross heating value of coal is ______________ the net heating value?
A. Higher than
B. Lower than
C. Same as
D. Either A. or B.; depends on the type of coal - Explosion limit of blast furnace gas is 37 to 71% gas in gas-air mixture. It means that the blast furnace gas will explode when burnt in a confined space, if its concentration in the gas-air mixture is _______________ percent?
A. 71%
C. In between 37 & 71%
D. None of these - The calorific value of a gas of composition CO2 = 20%, H2 = 50%, CH4 = 30%, is y. If the composition of gas is changed to H2 = 50%, CH4 = 30%, CO2 = 10%, N2 = 10%, then the calorific value will be___________________?
A. y
B. 0.95 y
C. 1.05 y
D. 1.8 y - The calorific value of natural gas is about ______________ kcal/Nm3?
A. 10,000
B. 2,500
C. 25,000
D. 35,000 - Flue gas from the heating chamber of by product coke ovens is removed by________________?
A. Forced draft fan
B. Induced draft fan
C. Steam ejector
D. Natural draft - Gross calorific value will be equal to the net calorific value for __________________?
A. H2
B. C2H2
C. CO
D. C2H6 - A sample of natural gas containing 80% methane (CH4) and rest nitrogen (N2) is burnt with 20% excess air. With 80% of the combustibles producing CO2 and the remainder going to CO, the Orsat analysis in volume percent is_________________?
A. CO2 : 6.26, CO : 1.56, O2 : 3.91, H2O :15.66, N2 : 72.60
B. CO2 : 7.42, CO : 1.86, O2 : 4.64, N2:86.02
C. CO2 : 6.39, CO : 1.60, O2 : 3.99, H2O:25.96, N2:72.06
D. CO2 : 7.60, CO : 1.90, O2 : 4.75, N2 : 85.74 - Main constituent of natural gas is ________________?
A. CH4 (upto 90%)
B. C2H6
C. C3H8
D. H2 - Coke oven gas burns with a yellowish flame, because of the presence of __________________?
A. CO2
B. CH4
C. H2
D. NH3
