Fuels and Combustion Fuel gases containing hydrocarbons (ie.g. coke oven gas) are not preheated before burning, mainly because It reduces its calorific value tremendously It reduces its flame temperature tremendously There are chances of explosion during preheating The hydrocarbons crack thereby choking and fouling the heat transfer surface by carbon soot It reduces its calorific value tremendously It reduces its flame temperature tremendously There are chances of explosion during preheating The hydrocarbons crack thereby choking and fouling the heat transfer surface by carbon soot ANSWER DOWNLOAD EXAMIANS APP
Fuels and Combustion In low temperature carbonisation (as compared to high temperature carbonisation) of coal Aliphatic tar is produced All of these Ammonia yield is more Free carbon in tar is more Aliphatic tar is produced All of these Ammonia yield is more Free carbon in tar is more ANSWER DOWNLOAD EXAMIANS APP
Fuels and Combustion Out of the following fuels, the difference between the net and gross calorific value is maximum in case of Fuel oil Pitch Bituminous coal Blast furnace gas Fuel oil Pitch Bituminous coal Blast furnace gas ANSWER DOWNLOAD EXAMIANS APP
Fuels and Combustion Naphthalene is removed from coke oven gas by Scrubbing with wash oil (a petroleum product) Adsorbing on bog iron bed Absorbing in vetro-coke solution None of these Scrubbing with wash oil (a petroleum product) Adsorbing on bog iron bed Absorbing in vetro-coke solution None of these ANSWER DOWNLOAD EXAMIANS APP
Fuels and Combustion Which of the following is a poisonous fuel gas? None of these Blast furnace gas Coke oven gas Natural gas None of these Blast furnace gas Coke oven gas Natural gas ANSWER DOWNLOAD EXAMIANS APP
Fuels and Combustion __________ prohibits the use of alcohols directly in petrol engines. Low flash point High cost & availability Low octane number Low calorific value Low flash point High cost & availability Low octane number Low calorific value ANSWER DOWNLOAD EXAMIANS APP
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