Fuels and Combustion Froth floatation is used for Washing fine coal dust (< 0.5 mm size) Washing lump coal (> 80 mm size) Removing ash from the coal based on difference in specific gravity of coal and ash All of these Washing fine coal dust (< 0.5 mm size) Washing lump coal (> 80 mm size) Removing ash from the coal based on difference in specific gravity of coal and ash All of these ANSWER DOWNLOAD EXAMIANS APP
Fuels and Combustion For long flame and easy ignition, the coal used should have Low ash High calorific value High volatile matter High ash Low ash High calorific value High volatile matter High ash ANSWER DOWNLOAD EXAMIANS APP
Fuels and Combustion Deficiency of combustion air during combustion of a gaseous fuel Lengthens the flame Causes heat loss of fuel by its partial combustion Shortens the flame Both A & B Lengthens the flame Causes heat loss of fuel by its partial combustion Shortens the flame Both A & B ANSWER DOWNLOAD EXAMIANS APP
Fuels and Combustion Gobar gas is produced by the __________ of 'gobar' (cow dung). Dehydration Hydrolysis Fermentation Oxidation Dehydration Hydrolysis Fermentation Oxidation ANSWER DOWNLOAD EXAMIANS APP
Fuels and Combustion Octane number of 2, 2, 4 - trimethyl pen-tane is 100 In between 0 and 100 More than 100 100 In between 0 and 100 More than 100 ANSWER DOWNLOAD EXAMIANS APP
Fuels and Combustion The temperature at which plastic layer formation takes place during carbonisation of coal varies from __________ °C. 100 to 150 550 to 650 700 to 850 350 to 450 100 to 150 550 to 650 700 to 850 350 to 450 ANSWER DOWNLOAD EXAMIANS APP
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