Fuels and Combustion Low temperature oxidation and spontaneous combustion of freshly mined coal is accentuated, if It contains large amount of volatile matter Smaller fines are stored in large quantity All of these It is stored in tall heaps It contains large amount of volatile matter Smaller fines are stored in large quantity All of these It is stored in tall heaps ANSWER DOWNLOAD EXAMIANS APP
Fuels and Combustion Natural draft created by the chimney depends upon Both A & B Temperature of the flue gas Neither A nor B Its height Both A & B Temperature of the flue gas Neither A nor B Its height ANSWER DOWNLOAD EXAMIANS APP
Fuels and Combustion A carbonaceous fuel (containing no H₂ or hydrocarbons) is burnt and the resulting flue gas contains 21% CO₂. It means that No excess air has been used for combustion Complete combustion of fuel has taken place 21% excess air has been used for combustion 21% excess oxygen has been used for combustion No excess air has been used for combustion Complete combustion of fuel has taken place 21% excess air has been used for combustion 21% excess oxygen has been used for combustion ANSWER DOWNLOAD EXAMIANS APP
Fuels and Combustion A gaseous fuel in order to develop luminousity on burning, must contain Carbon monoxide Hydrocarbons Hydrogen Oxygen Carbon monoxide Hydrocarbons Hydrogen Oxygen ANSWER DOWNLOAD EXAMIANS APP
Fuels and Combustion During the carbonisation of coal Evolution of H₂ and formation of methane and aromatics occur at > 700°C Hard semi-coke starts shrinking at 600°C All tar is evolved at < 600°C All of these Evolution of H₂ and formation of methane and aromatics occur at > 700°C Hard semi-coke starts shrinking at 600°C All tar is evolved at < 600°C All of these ANSWER DOWNLOAD EXAMIANS APP
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 Gasification Hydrogenation None of these Carbonisation Gasification Hydrogenation None of these ANSWER DOWNLOAD EXAMIANS APP
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