Fuels and Combustion Low temperature oxidation of stored coal results in the Increase in its oxygen content Decrease in its caking power & calorific value Decrease in its carbon & hydrogen content All of these Increase in its oxygen content Decrease in its caking power & calorific value Decrease in its carbon & hydrogen content All of these ANSWER DOWNLOAD EXAMIANS APP
Fuels and Combustion For which pair of the fuel gases, calorific value (C.V.) of one fuel is almost double that of the other on volume basis (i.e., kcal/Nm³ ), while the C.V. is same on weight basis (i.e., kcal/kg) ? Propane and LPG Propane and acetylene F. gas and coke oven gas Sewage gas and gobar gas Propane and LPG Propane and acetylene F. gas and coke oven gas Sewage gas and gobar gas ANSWER DOWNLOAD EXAMIANS APP
Fuels and Combustion Bright coal Contains more than 90% fussain Is non-coking Contains more than 90% durain Contains mainly vitrain & clarain and is generally coking Contains more than 90% fussain Is non-coking Contains more than 90% durain Contains mainly vitrain & clarain and is generally coking ANSWER DOWNLOAD EXAMIANS APP
Fuels and Combustion Coking coals are invariably Semi-anthracites Anthracites Bituminous coals Lignites Semi-anthracites Anthracites Bituminous coals Lignites ANSWER DOWNLOAD EXAMIANS APP
Fuels and Combustion Mineral matter content (M) and ash content (A) in coal are approximately related as M = 1.1A M = 1.5A M = A M = 2A M = 1.1A M = 1.5A M = A M = 2A ANSWER DOWNLOAD EXAMIANS APP
Fuels and Combustion The ratio of % total carbon obtained in the ultimate analysis of coke and % fixed carbon obtained in the proximate analysis is always > 1 1 < 1 Unpredictable > 1 1 < 1 Unpredictable ANSWER DOWNLOAD EXAMIANS APP
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