Fuels and Combustion Which of the following reactions occuring during coal gasification is called the Neumann reversal reaction? C + 2H₂O ⟷ CO₂ + 2H₂ C + H₂O ⟷ CO + H₂ CO + H₂O ⟷ CO₂ + H₂ 2CO ⟷ C + CO₂ C + 2H₂O ⟷ CO₂ + 2H₂ C + H₂O ⟷ CO + H₂ CO + H₂O ⟷ CO₂ + H₂ 2CO ⟷ C + CO₂ ANSWER DOWNLOAD EXAMIANS APP
Fuels and Combustion Anthracite can be used for Making carbon electrodes Recarbonising steel Blending with highly coking coal to check its swelling which helps in saving coke even walls from damage and to produce high strength coke All of these Making carbon electrodes Recarbonising steel Blending with highly coking coal to check its swelling which helps in saving coke even walls from damage and to produce high strength coke All of these ANSWER DOWNLOAD EXAMIANS APP
Fuels and Combustion Nitrogen in coal All of these Is recovered as ammonia during its carbonisation Comes from protein in parent vegetable matter Is present upto 1-2% All of these Is recovered as ammonia during its carbonisation Comes from protein in parent vegetable matter Is present upto 1-2% ANSWER DOWNLOAD EXAMIANS APP
Fuels and Combustion Ratio of primary air to secondary air increases with increase in the rank of coal, because the Ratio of fixed carbon to volatile matter increases Calorific value of the coal increases Oxygen content progressively decreases High rank coals have higher amount of volatile matter Ratio of fixed carbon to volatile matter increases Calorific value of the coal increases Oxygen content progressively decreases High rank coals have higher amount of volatile matter ANSWER DOWNLOAD EXAMIANS APP
Fuels and Combustion Increase in ash content of blast furnace coke Increases its consumption in the furnace Decreases its hardness and abrasion resistance Does not affect its consumption in the furnace Reduces its consumption in the furnace Increases its consumption in the furnace Decreases its hardness and abrasion resistance Does not affect its consumption in the furnace Reduces its consumption in the furnace ANSWER DOWNLOAD EXAMIANS APP
Fuels and Combustion Very __________ coals are completely devoid of cokability i.e, it is non coking. Young Both A & B Neither A nor B Mature Young Both A & B Neither A nor B Mature ANSWER DOWNLOAD EXAMIANS APP
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