Stoichiometric combustion of 12 kg of carbon requires __________ of oxygen. All of these 1kg mole 22.4 Nm³ 32 kg TRUE ANSWER : ? YOUR ANSWER : ?
Which of the following gaseous fuels has the highest net calorific value (kcal/Nm³)? Producer gas Natural gas Liquified petroleum gas Carburetted water gas TRUE ANSWER : ? YOUR ANSWER : ?
In low temperature carbonisation of coal as compared to high temperature carbonisation __________ produced is less. Free carbon content in tar Difference in gross & net calorific value of the coke oven gas Yield percentage of coke Yield of ammonia present in coke oven gas TRUE ANSWER : ? YOUR ANSWER : ?
Ionisation potential applied across the electrodes of electrostatic tar precipitator is around 60 KV AC 230 V AC 60 KV DC 230 V DC TRUE ANSWER : ? YOUR ANSWER : ?
__________ has the widest inflammability limit (explosion limit) of all the gases. Acetylene Hydrogen Methane Carbon monoxide TRUE ANSWER : ? YOUR ANSWER : ?
Advantages of fluidised bed combustion are Reduced NOx formation in flue gas High heat transfer rate Lower furnace operating temperature All of these TRUE ANSWER : ? YOUR ANSWER : ?
Optimum preheating temperature for pitch creosote mixture (PCM) which is also termed as C.T.F-200, before atomisation through burners is 200 °C 200 °F 200 °R 200 °K TRUE ANSWER : ? YOUR ANSWER : ?
During combustion of gaseous fuels, deficiency of air Tends to shorten the flame Increases the flame temperature Does not affect the flame length Lengthens the flame TRUE ANSWER : ? YOUR ANSWER : ?
In high temperature carbonisation (as compared to low temperature carbonisation) of coal All of these Coke oven gas yield is more Calorific value of coke oven gas is less Tar yield is less but free carbon in tar is more TRUE ANSWER : ? YOUR ANSWER : ?