Fuels and Combustion During combustion of gaseous fuels, deficiency of air Does not affect the flame length Tends to shorten the flame Lengthens the flame Increases the flame temperature Does not affect the flame length Tends to shorten the flame Lengthens the flame Increases the flame temperature ANSWER DOWNLOAD EXAMIANS APP
Fuels and Combustion Which of the following has the highest flame speed? C₂H₆ H₂ CH₄ CO C₂H₆ H₂ CH₄ CO ANSWER DOWNLOAD EXAMIANS APP
Fuels and Combustion Emission of dense white smoke out of the chimney of a thermal power plant is an indication of the use of Too much air for combustion Correct amount of air for combustion Pulverised coal in boilers Less air for combustion Too much air for combustion Correct amount of air for combustion Pulverised coal in boilers Less air for combustion ANSWER DOWNLOAD EXAMIANS APP
Fuels and Combustion Highly caking coals Both B and C May damage the coke oven walls during carbonisation Produce weak coke Produce strong coke Both B and C May damage the coke oven walls during carbonisation Produce weak coke Produce strong coke ANSWER DOWNLOAD EXAMIANS APP
Fuels and Combustion Heat penetration rate in narrow coke ovens in high temperature carbonisation of coal is around __________ cm/hr. 10 20 2.5 0.5 10 20 2.5 0.5 ANSWER DOWNLOAD EXAMIANS APP
Fuels and Combustion Commercial production of petrol from coal (as practised in a factory at Sasol in South Africa) is done by the __________ of coal. Hydrogenation None of these Gasification Carbonisation Hydrogenation None of these Gasification Carbonisation ANSWER DOWNLOAD EXAMIANS APP
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