A. Neumann reversal
B. Shift conversion
C. Boudouard
D. Reduction
Correct Answer: Boudouard ✔
Last Updated: March 08, 2019
Related MCQs
- Presence of phosphorous in metallurgical coal__________?
- Which is the heaviest fuel gas out of the following ?
- The calorific value of producer gas is around __________ kcal/Nm3?
- Short/intense flame is produced during combustion of gaseous fuel by using__________?
- During combustion of coal on grate, clinker formation is increased by the__________?
- Calorific value of coke even gas produced by low temperature carbonisation of coal is about __________ Kcal/Nm3?
- Softening temperature of coal ash is a measure of the __________ of coal?
- A sample of natural gas containing 80% methane (CH4) and rest nitrogen (N2) is burnt with 20% excess air. With 80% of the combustibles producing CO2 and the remainder going to CO, the Orsat analysis in volume percent is__________?
- Higher fuel combustion efficiency cannot be achieved by__________?
- Tolerable concentration of toxic carbon monoxide in atmospheric air is about __________ ppm?
- Which of the following combustibles is absent in blast furnace gas ?
- A carbonaceous fuel (containing no H2 or hydrocarbons) is burnt and the resulting flue gas contains 21% CO2. It means that__________?
- Percentage of methane in coke oven gas may be around __________?
- Gobar gas is produced by the __________ of ‘gobar’ (cow dung) ?
- Atomising steam to fuel oil ratio in a burner should be around__________?
- The maximum adiabatic flame temperature is attained, when the fuel is burnt with __________?
- Volatile matter content in coking coal may be about __________ percent?
- With increase in the temperature of carbonisation of coal __________?
- The catalyst used in shift converter is __________?
- Calorific value of a typical dry anthracite coal may be around __________ Kcal/kg?
- Low temperature oxidation of coal during storage does not decrease its__________?
- Theoretical flame temperature of a fuel is that temperature which is attained, when the fuel is completely burnt ‘using theoretical amount of air in__________?
- __________ is used as jet engine fuel ?
- Tar is a better fuel than furnace oil, because of its__________?
- In low temperature carbonisation (as compared to high temperature carbonisation) of coal__________?
- Which of the following will be unsuitable for dust cleaning from flue gas at 400°C from a pulverised coal fired boiler ?
- Artificial draught produced by a fan can be controlled by the__________?
- Out of the following, which is the most important parameter for the blast furnace grade coke ?
- Coke having higher porosity has __________?
- Coals used for the generation of producer gas should have __________?
- Caking coal is desirable for__________?
- A coal having higher volatile matter content, has lower__________?
- Which of the following is unsuitable fuel for producer gas manufacture ?
- Use of preheated air for combustion of fuel in the furnace, increases the__________?
- Which of the following is a poisonous fuel gas ?
- Blast furnace gas compared to coke oven gas has__________?
- Which of the following has the highest calorific value (kcal/Nm3) ?
- The main function of primary air in pulverised coal fired burner is to__________?
- Weathering of coal during storage causes__________?
- Number of macrocomponents present in coal according to Stopes are __________?
- Which will have the least volatile matter and hence will be the most difficult to ignite ?
- Which of the following petrological constitutes is responsible for bright and lustrous black band of bituminous coal ?
- High sulphur content in a fuel __________ of the flue gases?
- Low temperature oxidation of stored coal results in the__________?
- High rate of heating of coke ovens__________?
- ombustion of pulverised coal compared to the lumpy coal __________?
- Supply of excess air for complete combustion of fuel is necessitated to facilitate__________?
- Correct viscosity of furnace oil at the burner tip for proper atomisation is about 25 centistokes. To reduce the viscosity of high viscosity furnace oil (250 centistokes) to the correct atomisation viscosity (i.e. 25 cst), it should be preheated to about __________°C?
- Coke oven gas burns with a yellowish flame, because of the presence of __________?
- With increase in moisture content of coal, its__________?
- In general, the limit of inflammability/explosion limit of fuel gases is widened by the__________?