A. 1000
B. 4000
C. 8000
D. 15000
Correct Answer: 8000 ✔
Last Updated: March 08, 2019
Related MCQs
- 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__________?
- Traces of tar fog present in the coke oven gas is removed by__________?
- C/H ratio is the maximum in case of__________?
- The bright glow of a combustion process is the characteristic of __________ temperature oxidation of coal?
- Largest constituent of blast furnace gas is__________?
- A travelling grate stoker is meant for the efficient burning of __________ coal?
- Lurgi coal gasifier is a pressurised __________ bed reactor?
- The fuel ratio of a coal is__________?
- Presence of free moisture in coal is most disadvantageous during__________?
- Fuel for a nuclear reactor (thermal) is __________?
- The calorific value of ‘LPG’ (50% propane + 50% butane) is about __________ kcal/Nm3?
- With increase in the oxygen content of the coal, its __________ decreases?
- Coal tar fuels (CTF) as compared to petroleum based fuel oils have higher __________?
- Nitrogen present in the flue gas is determined in the Orsat apparatus by absorbing it in__________?
- Catalyst used in Fischer-Tropsch process is__________?
- Dry air required to burn 1 kg of carbon completely may be around __________ kg?
- ‘Fat coals’ are those coals which have very high__________?
- With increase in C/H ratio of a fuel, the amount of CO2 formed on its complete combustion__________?
- Wood charcoal is obtained by the destructive distillation of wood. It is used in the production of activated carbon, which is not used for the__________?
- Advantages of fluidised bed combustion are __________?
- The main reason for making the copper calorimeter (used in bomb calorimeter) silvery white and shining/polished is to__________?