A. CO
B. H2
C. CH4
D. C2H6
Related Mcqs:
- The maximum adiabatic flame temperature in air is _____________ the maximum flame temperature in pure oxygen?
A. Lower than
B. Higher than
C. Same as
D. Not related to - Actual flame temperature is always lower than the adiabatic flame temperature, because there is________________?
A. No possibility of obtaining complete combustion at high temperature
B. Always loss of heat from the flame
C. Both A. and B.
D. Neither A. nor B. - Which of the following has the highest theoretical flame temperature ?
A. Blast furnace gas
B. Hydrogen
C. Acetylene
D. Coke oven gas - Which of the following has the highest flame velocity ?
A. H2
B. CO
C. CH4
D. C2H6 - Coke oven gas burns with a yellowish flame, because of the presence of __________________?
A. CO2
B. CH4
C. H2
D. NH3 - The maximum adiabatic flame temperature in air as compared to that in pure oxygen is_______________?
A. Much lower
B. Much higher
C. Same
D. Either lower or higher, depends on the type of fuel - If the specific heat of gaseous products of combustion of a fuel is high, the abiabatic flame temperature will be_____________?
A. Low
B. High
C. Very high, if the fuel is of low calorific value
D. None of these - Adiabatic flame temperature of a fuel is dependent on the initial temperature of___________________?
A. Fuel
B. Air
C. Both A. & B.
D. Neither A. nor B. - Preheating of ______________ the flame temperature?
A. The gaseous fuel before combustion decreases
B. Combustion air decreases
C. Either the fuel or the air or both, increases
D. Either the fuel or the air does not affect - With increase in calorific value of fuels, their adiabatic flame temperatures__________________?
A. Increase
B. Decrease
C. Remain unchanged
D. May increase or decrease; depends on the quantity of products of combustion
