Fuels and Combustion Yield of charcoal in high temperature carbonisation of wood is about __________ percent. 10 25 75 50 10 25 75 50 ANSWER DOWNLOAD EXAMIANS APP
Fuels and Combustion Volatile matter content in coking coal may be about __________ percent. 22 7 1 46 22 7 1 46 ANSWER DOWNLOAD EXAMIANS APP
Fuels and Combustion With increase in C/H ratio of a fuel, the dew point of flue gases Remains same May increase or decrease ; depends on the type of fuel Increases Decreases Remains same May increase or decrease ; depends on the type of fuel Increases Decreases 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
Fuels and Combustion Which of the following will be unsuitable for dust cleaning from flue gas at 400°C from a pulverised coal fired boiler ? Multicyclones Hydrocyclones Wet scrubber Bag filter Multicyclones Hydrocyclones Wet scrubber Bag filter ANSWER DOWNLOAD EXAMIANS APP
Fuels and Combustion Sometimes water is sprayed during coal charging in the coke oven, which helps in Prevention of clinker formation in the oven Controlling the dust nuisance while charging the coal Reducing the cracking of hydrocarbons in the gas and increasing the percentage of CO & H₂ in the gas (due to the endothermic reaction represented by C + H₂O = CO + H₂) All of these Prevention of clinker formation in the oven Controlling the dust nuisance while charging the coal Reducing the cracking of hydrocarbons in the gas and increasing the percentage of CO & H₂ in the gas (due to the endothermic reaction represented by C + H₂O = CO + H₂) All of these ANSWER DOWNLOAD EXAMIANS APP
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