Pick out the wrong statement ?
Pick the odd man out?
Carbon Content by weight in air dried wood may be about __________ percent?
Which of the following has the least calorific value (kcal/Nm3) ?
Turndown ratio of a gas burner is equal to the __________ ?
Which of the following gaseous fuels has the lowest calorific value ?
Ignition temperature of a fuel in air is __________ that in pure oxygen?
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 __________?

Pick out the wrong statement ?

A. LPG is also used as fuel for automobiles & small furnaces and for cutting & welding of
metals
B. The minimum temperature, at which a petroleum oil vapor catches fire and continues to burn,
is called its flash point
C. Each ton of petroleum oil on distillation produces about 30-50 Nm3 of gas
D. Maximum yield of naphthalene is obtained on distillation of crude oil

Correct Answer: B. The minimum temperature, at which a petroleum oil vapor catches fire and continues to burn,
is called its flash point ✔

Last Updated: March 11, 2019