Fuels and Combustion Producer gas containing least amount of tar is produced by the High pressure gasification of coal (e.g. in Lurgi gasifier) Partial combustion of coal Partial combustion of large size (< 50 mm) coke Atmospheric pressure gasification of coal (e.g., in Kopper-Totzek gasifier) High pressure gasification of coal (e.g. in Lurgi gasifier) Partial combustion of coal Partial combustion of large size (< 50 mm) coke Atmospheric pressure gasification of coal (e.g., in Kopper-Totzek gasifier) ANSWER DOWNLOAD EXAMIANS APP
Fuels and Combustion Soft coke is not Used in blast furnaces A domestic fuel None of these Produced by low temperature carbonisation of coal Used in blast furnaces A domestic fuel None of these Produced by low temperature carbonisation of coal ANSWER DOWNLOAD EXAMIANS APP
Fuels and Combustion Prime coking coal is always blended with medium or non- coking coal before ear-bonisation Neither A nor B Both A & B To check against its excessive swelling during heating, which may exert high pressure and damage coke oven walls Because, it alone produces unreactive coke Neither A nor B Both A & B To check against its excessive swelling during heating, which may exert high pressure and damage coke oven walls Because, it alone produces unreactive coke ANSWER DOWNLOAD EXAMIANS APP
Fuels and Combustion A coal having high ratio of volatile matter to fixed carbon as compared to a coal having low ratio of volatile matter to fixed carbon Requires smaller combustion space and less secondary air Is more difficult to ignite and produces a shorter flame Is less liable to spontaneous combustion on storage None of these Requires smaller combustion space and less secondary air Is more difficult to ignite and produces a shorter flame Is less liable to spontaneous combustion on storage None of these ANSWER DOWNLOAD EXAMIANS APP
Fuels and Combustion Pensky-Marten apparatus is used for those oils, whose flash points are __________ °F. 90-110 >120 90-110 >120 ANSWER DOWNLOAD EXAMIANS APP
Fuels and Combustion The internal energy of the combustion products is __________ compared to that of reactants. More Equal Less More or less ; (depends on the state of fuel.) More Equal Less More or less ; (depends on the state of fuel.) ANSWER DOWNLOAD EXAMIANS APP
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