Fuels and Combustion Commercial production of petrol from coal (as practised in a factory at Sasol in South Africa) is done by the __________ of coal. Carbonisation Hydrogenation Gasification None of these Carbonisation Hydrogenation Gasification None of these ANSWER DOWNLOAD EXAMIANS APP
Fuels and Combustion Froth floatation is used for Washing fine coal dust (< 0.5 mm size) All of these Removing ash from the coal based on difference in specific gravity of coal and ash Washing lump coal (> 80 mm size) Washing fine coal dust (< 0.5 mm size) All of these Removing ash from the coal based on difference in specific gravity of coal and ash Washing lump coal (> 80 mm size) ANSWER DOWNLOAD EXAMIANS APP
Fuels and Combustion Caking index of a coal is a measure of its Porosity Reactivity Agglutinating (binding) properties Abradability Porosity Reactivity Agglutinating (binding) properties Abradability ANSWER DOWNLOAD EXAMIANS APP
Fuels and Combustion Flue gas discharge velocity through chimney of a big thermal power plant may be around __________ m/sec. 0.5 50 10 500 0.5 50 10 500 ANSWER DOWNLOAD EXAMIANS APP
Fuels and Combustion Use of pulverised coal in boiler furnace provides Less erosion on furnace walls Better combustion Smokeless burning High calorific value Less erosion on furnace walls Better combustion Smokeless burning High calorific value ANSWER DOWNLOAD EXAMIANS APP
Fuels and Combustion Which of the following has the highest calorific value? Peat Lignite Sub-bituminous coal Anthracite Peat Lignite Sub-bituminous coal Anthracite ANSWER DOWNLOAD EXAMIANS APP
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