Fuels and Combustion Presence of free moisture in coal during its high temperature carbonisation Reduces the coking time None of these Increases the loss of fine coal dust from the ovens when charging Protects the volatile products from pyrolysis (cracking) in the presence of hot coke and hot oven walls Reduces the coking time None of these Increases the loss of fine coal dust from the ovens when charging Protects the volatile products from pyrolysis (cracking) in the presence of hot coke and hot oven walls ANSWER DOWNLOAD EXAMIANS APP
Fuels and Combustion Ignition temperature decreases progressively from anthracite to lignite, because Moisture content increases Ash content increases Volatile matter content increases Carbon content decreases Moisture content increases Ash content increases Volatile matter content increases Carbon content decreases ANSWER DOWNLOAD EXAMIANS APP
Fuels and Combustion Which of the following is a single stage, fixed bed high pressure coal gasification process? Lurgi Process Winkler process None of these Kopper-Totzek process Lurgi Process Winkler process None of these Kopper-Totzek process ANSWER DOWNLOAD EXAMIANS APP
Fuels and Combustion Which of the following is unsuitable fuel for producer gas manufacture? Coke Anthracite Coal having high fusion point of its ash Coal having low fusion point of its ash Coke Anthracite Coal having high fusion point of its ash Coal having low fusion point of its ash ANSWER DOWNLOAD EXAMIANS APP
Fuels and Combustion Bright coal Is non-coking Contains mainly vitrain & clarain and is generally coking Contains more than 90% durain Contains more than 90% fussain Is non-coking Contains mainly vitrain & clarain and is generally coking Contains more than 90% durain Contains more than 90% fussain ANSWER DOWNLOAD EXAMIANS APP
Fuels and Combustion Coal tar (produced by high temperature carbonisation) is the main source of Alphatic compounds Paraffins Aromatic compounds Olefins Alphatic compounds Paraffins Aromatic compounds Olefins ANSWER DOWNLOAD EXAMIANS APP
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