A. More than
B. Less than
C. Equal to
D. Either more or less; depends on the type of fuel
Correct Answer: More than ✔
Last Updated: March 08, 2019
Related MCQs
- Eschka mixture, which is used for the determination of sulphur in coal, is a mixture of __________?
- Higher percentage of ash in coal meant for the production of metallurgical grade coke __________?
- Coal is heated in presence of air to a temperature of about __________ °C, while determining its ash content for proximate analysis?
- Beehive coke oven__________?
- Gross and net calorific value of a fuel will be the same__________?
- Commercial production of petrol from coal (as practised in a factory at Sasol in South Africa) is done by the __________ of coal?
- Fussain __________?
- Explosion limit of blast furnace gas is 37 to 71% gas in gas-air mixture. It means that the blast furnace gas will explode when burnt in a confined space, if its concentration in the gas-air mixture is __________ percent?
- Quantity of coke produced from metallurgical coal may be around __________ percent?
- The liquid used for the washing of coal in an industrial coal washery is a mixture of water and __________?
- Which of the following constituents of coal is the most important in the production of coke ?
- The combustion reaction, C + O2 = CO2, is __________?
- Orsat apparatus is meant for __________?
- Yield of coke oven gas in low temperature carbonisation of coal is about __________ Nm3 /ton of dry coal?
- Blast furnace gas burns with a bluish flame, because of the presence of__________?
- Calorific value of pitch creosote mixture (PCM) i.e., C.T.F.-200 is about__________?
- Fuel gases containing hydrocarbons (e.g. coke oven gas) are not preheated before burning, mainly because __________?
- Calorific values of both the solid as well as the liquid fuels can be determined by __________ calorimeter?
- Calorific value of bituminous coal may be around __________ Kcal/kg?
- Stack heat losses can be minimised by__________?
- Method of maintaining fires in furnace during standby periods without undue consumption of fuel is called__________?
- Anthracite coal __________?
- By-products are __________ recovered in ‘Beehive ovens’ ?
- A coal containing very high percentage of durain is called __________ coal?
- The function of secondary combustion air is to __________?
- Temperature of coke oven gas just before entering into saturator (for recovery of NH3) is about __________ °C?
- Producer gas containing least amount of tar is produced by the__________?
- Incomplete combustion of fuel in the furnace is judged by high __________ of the flue gases?
- Which of the following is used for making the explosive „TNT‟ ?
- Safe condition for storage of high V.M. bituminous coal is that __________?
- Flue gas from the heating chamber of by product coke ovens is removed by__________?
- Mineral matter, ‘M’ and ash percentage ‘A’ in coal are roughly related as__________?
- Calorific value of dry wood may be around __________ Kcal/kg?
- Combustion of pulverised coal as compared to that of lump coal __________?
- During coal carbonisation process, the conversion of semi-coke to coke is accompanied by an increase in the __________ of the mass?
- Coal tar fuel – 200 (CTF 200) is a mixture of __________?
- Sometimes water is sprayed during coal charging in the coke oven, which helps in __________?
- The sequence of absorption in flue gas analysis by Orsat’s apparatus is respectively__________?
- Improper storage condition results in the weathering of coal and spontaneous combustion, which increases its__________?
- Critical Air Blast (CAB) value of coke is a direct measure of its__________?
- A particular coal is said to be free burning when it __________?
- Ultimate analysis of coal determines its __________ content?
- Higher efficiency in the combustion of solid fuel cannot be achieved by__________?
- If oxygen content in the flue gas rises too high, fuel is being wasted by __________?
- During combustion of a gaseous fuel, the presence of a non-luminous flame is an indication of the__________?
- __________ process is meant for direct hydrogenation of coal to produce liquid fuel?
- One kg of carbon for theoretically complete combustion requires __________ kg of air?
- When incomplete combustion loss is high, the flue gas analysis shows large amount of __________?
- Naphthalene recovered from coke oven gas is used__________?
- Grindability index of a coal is 100. It implies that the __________?
- In high temperature carbonisation (as compared to low temperature carbonisation) of coal, the__________?