Related Questions

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 & B
D Neither A nor B
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
The maximum adiabatic flame temperature of fuels in air is __________ the maximum flame temperature in pure oxygen.
A Lower than
B Higher than
C Same as
D Not related to
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
An hmh flame speed is obtained in diesel engine when air fuel ratio is
A Uniform throughout the mixture
B Chemically correct mixture
C About 35% of rich mixture
D About 10% of rich mixture
The respective ratio between the speed of a speed of the car, bus and train is 5 : 9 : 6. The average speed of the car, bus and train is 72 km/hr together. What is the average speed (km/h)of the car and the train together?
A 82
B 72
C 67
D 84
Which of the following word will be the proper replacement of the underlined word this sentence- "Following the killing of Sergeant Zohurul Haque in prison by the Ayub khan government in 15 February 1969, a flame of protest spread throughout erstwhile Est Pakistan."
A dispute
B gripe
C demonstration
D rebellion
Which one of the following carbon compounds will not give a sooty flame?
A Benzene
B Hexane
C Napthalene
D Anthracene
When a metal is heated in a flame, the electrons absorb energy and jump to higher energy state. On coming back to the lower energy siate, they emit light, which we can observe in
A Raman spectra
B Absorption spectra
C Emission spectra
D Fluorescence

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