Fuels and Combustion Rate of low temperature oxidation of coal due to bad storage conditions Decreases with increase in surface area Does not vary with increase in surface area Is accelerated by storage in large heaps with small surface to volume ratio Is more for low volatile coal compared to high volatile coal Decreases with increase in surface area Does not vary with increase in surface area Is accelerated by storage in large heaps with small surface to volume ratio Is more for low volatile coal compared to high volatile coal ANSWER DOWNLOAD EXAMIANS APP
Fuels and Combustion High temperature in gasification of coal favours High production of CO Low production of CO₂ High production of CO₂ Both B and C High production of CO Low production of CO₂ High production of CO₂ Both B and C ANSWER DOWNLOAD EXAMIANS APP
Fuels and Combustion For long flame and easy ignition, the coal used should have High calorific value High ash Low ash High volatile matter High calorific value High ash Low ash High volatile matter ANSWER DOWNLOAD EXAMIANS APP
Fuels and Combustion Optimum preheating temperature for pitch creosote mixture (PCM) which is also termed as C.T.F-200, before atomisation through burners is 200 °R 200 °C 200 °K 200 °F 200 °R 200 °C 200 °K 200 °F ANSWER DOWNLOAD EXAMIANS APP
Fuels and Combustion With increase in the time of carbonisation at a particular temperature (say 1000°C), the __________ percentage in coke oven gas increases. Hydrogen Methane Unsaturated hydrocarbons All of these Hydrogen Methane Unsaturated hydrocarbons All of these ANSWER DOWNLOAD EXAMIANS APP
Fuels and Combustion Main constituents of purified Lurgi gas are CO, H₂ & CH₄ CO₂, O₂ & CO H₂, CmHn & CO₂ N₂, H₂ & CO₂ CO, H₂ & CH₄ CO₂, O₂ & CO H₂, CmHn & CO₂ N₂, H₂ & CO₂ ANSWER DOWNLOAD EXAMIANS APP
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