Fuels and Combustion During the carbonisation of coal Evolution of H₂ and formation of methane and aromatics occur at > 700°C All of these All tar is evolved at < 600°C Hard semi-coke starts shrinking at 600°C Evolution of H₂ and formation of methane and aromatics occur at > 700°C All of these All tar is evolved at < 600°C Hard semi-coke starts shrinking at 600°C ANSWER DOWNLOAD EXAMIANS APP
Fuels and Combustion High pressure coal gasification is employed in __________ process. Lurgi Kopper-Totzek None of these Winkler Lurgi Kopper-Totzek None of these Winkler ANSWER DOWNLOAD EXAMIANS APP
Fuels and Combustion Which of the following has the highest flame velocity? H₂ C₂H₆ CH₄ CO H₂ C₂H₆ CH₄ CO ANSWER DOWNLOAD EXAMIANS APP
Fuels and Combustion The calorific value of natural gas is about __________ kcal/Nm³. 25, 000 2500 10, 000 35, 000 25, 000 2500 10, 000 35, 000 ANSWER DOWNLOAD EXAMIANS APP
Fuels and Combustion During combustion of gaseous fuels, deficiency of air Increases the flame temperature Lengthens the flame Tends to shorten the flame Does not affect the flame length Increases the flame temperature Lengthens the flame Tends to shorten the flame Does not affect the flame length ANSWER DOWNLOAD EXAMIANS APP
Fuels and Combustion Moisture loss is determined by the Moisture content of fuel Humidity of combustion air Both A and B The water formed by combustion reaction Moisture content of fuel Humidity of combustion air Both A and B The water formed by combustion reaction ANSWER DOWNLOAD EXAMIANS APP
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