Which of the following is not a by-product fuel?
(A) Pitch
(B) Blast furnace gas
(C) Petrol
(D) Refinery gas

1 Answer

Answer :

(C) Petrol

Related questions

Description : Which of the following is not a by-product fuel? (A) Producer gas (B) Blast furnace gas (C) Coke oven gas (D) Refinery gas

Last Answer : (A) Producer gas

Description : Out of the following fuels, the difference between the net and gross calorific value is maximum in case of (A) Pitch (B) Fuel oil (C) Blast furnace gas (D) Bituminous coal

Last Answer : (B) Fuel oil

Description : Which of the following gaseous fuels has the lowest calorific value? (A) Gobar gas (B) Refinery gas (C) Converter gas (D) Blast furnace gas

Last Answer : (D) Blast furnace gas

Description : Which of the following has the highest gross calorific value? (A) Blast furnace gas (B) Coke oven gas (C) Carburetted water gas (D) Oil refinery gas

Last Answer : (D) Oil refinery gas

Description : In a furnace operation, which is not preheated? (A) Solid fuels (B) Hydrocarbon containing fuel gases (e.g. coke oven gas, refinery gas etc.) (C) Both (A) and (B) (D) Neither (A) nor (B)

Last Answer : (C) Both (A) and (B)

Description : Which of the following will generate maximum volume of product of complete combustion (Nm3 /Nm3 of fuel)? (A) Carburetted water gas (B) Blast furnace gas (C) Natural gas (D) Producers' gas

Last Answer : (C) Natural gas

Description : Fuel used in B.F. stove is (A) Pulverised coal (B) Furnace oil (C) Blast furnace gas/mixed gas (D) Coke oven gas

Last Answer : (C) Blast furnace gas/mixed gas

Description : Which of the following fuel gases is heavier than air? (A) Blast furnace gas (B) Coke oven gas (C) Natural gas (D) Water gas

Last Answer : (A) Blast furnace gas

Description : Coke oven gas is a better fuel than blast furnace gas, because of its higher (A) Calorific value, cleanliness and relatively low distribution cost (due to its low specific gravity) (B) Adiabatic flame temperature ... release rate (thus requiring smaller combustion chamber) (D) All (A), (B) and (C)

Last Answer : (D) All (A), (B) and (C)

Description : Which is the heaviest fuel gas out of the following? (A) Blast furnace gas (B) Coke oven gas (C) Water gas (D) Carburetted water gas

Last Answer : (A) Blast furnace gas

Description : Which of the following fuel gases will require maximum amount of air for combustion of 1 Nm3 gas? (A) Blast furnace gas (B) Natural gas (C) Producer gas (D) Water gas

Last Answer : (B) Natural gas

Description : Which of the following is a poisonous fuel gas? (A) Coke oven gas (B) Blast furnace gas (C) Natural gas (D) None of these

Last Answer : (B) Blast furnace gas

Description : Which of the following is a primary fuel? (A) Blast furnace coke (B) Gasoline (C) Natural gas (D) Wood charcoal

Last Answer : (C) Natural gas

Description : . Which of the following fuel gases contains maximum amount of carbon monoxide? (A) Coke oven gas (B) Water gas (C) Blast furnace gas (D) L.D. converter gas

Last Answer : (D) L.D. converter gas

Description : Pitch creosote mixture (PCM) as compared to furnace oil is a better fuel, because its (A) Emissivity factor is higher (B) Sulphur content is lower (C) Flue gas has lower dew point thereby facilitating more waste heat recovery (D) All (A), (B) and (C)

Last Answer : (D) All (A), (B) and (C)

Description : White flue gas (resembling steam) coming out of the chimney of a thermal power plant indicates that the fuel used in the boiler furnace is (A) Tar (B) Coke oven gas (C) Pitch (D) Pulverised coke

Last Answer : (B) Coke oven gas

Description : Which of the following is not a by-product fuel? (A) Sewage gas (B) Refinery gas (C) Producer gas (D) Bagasse

Last Answer : (C) Producer gas

Description : Main use of soft coke is as __________ fuel. (A) Domestic (B) Blast furnace (C) Foundry (D) None of these

Last Answer : (A) Domestic

Description : Blast furnace uses the following as fuel (A) coal (B) coke (C) diesel (D) producer 

Last Answer : Blast furnace uses the following as fuel  coke

Description : In a refinery petroleum crude is fractionated into gas fraction, light ends, intermediate distillates, heavy distillates, residues and by products. The group of products including gas oil, diesel oil and ... the fraction (A) Heavy distillates (B) Intermediate distillates (C) Light ends (D) Residues

Last Answer : (A) Heavy distillates

Description : Which of the following is a rich fuel gas? (A) Producer gas (B) Coal gas from underground gasification of coal (C) Refinery gases (D) None of these

Last Answer : (C) Refinery gases

Description : Regenerators are used for waste heat recovery in (A) By-product coke ovens (B) Beehive coke oven (C) Blast furnace stoves (D) Soaking pits

Last Answer : (A) By-product coke ovens

Description : The most efficient equipment for the removal of sub-micronic dust particles from blast furnace gas is the (A) Venturi atomiser (B) Gravity settling chamber (C) Electro-static precipitator (D) Cyclone separator

Last Answer : (C) Electro-static precipitator

Description : Out of the following fuels used in a furnace exhausting flue gas at a temperature of 600°C, the percentage stack loss will be maximum in case ofcomplete combustion of (A) Furnace oil with air (B) Furnace oil with oxygen (C) Blast furnace gas with air (D) Blast furnace gas with oxygen

Last Answer : (C) Blast furnace gas with air

Description : Coke ovens in steel plant are heated by (A) Electricity (B) Blast furnace gas/mixed gas (C) Coke oven gas (D) Both (B) and (C)

Last Answer : (D) Both (B) and (C)

Description : Blast furnace stoves are meant for heating (A) Air (B) Blast furnace gas (C) Steam (D) None of these

Last Answer : (A) Air

Description : Which of the following has the least calorific value (kcal/Nm3 )? (A) Blast furnace gas (B) Coke oven gas (C) Sewage gas (D) Natural gas

Last Answer : (A) Blast furnace gas

Description : 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. (A) < 37% (B) > 71% (C) In between 37 & 71% (D) None of these

Last Answer : (C) In between 37 & 71%

Description : Blast furnace gas burns with a bluish flame, because of the presence of (A) CO (B) CH4 (C) CO2 (D) S

Last Answer : (A) CO

Description : Gross & net calorific value is the same for (A) Blast furnace gas (B) Coke oven gas (C) L.D. converter gas (D) None of these

Last Answer : (C) L.D. converter gas

Description : Mixed gas' used in steel plants is a mixture of (A) B.F. gas and coke oven gas (B) Coke oven gas and converter gas (C) Coke oven gas and L.P.G (D) Blast furnace gas and naphtha vapor

Last Answer : (A) B.F. gas and coke oven gas

Description : Dust content in raw blast furnace gas is about __________ gm/Nm3 ; hence it is cleaned to the dust level of about < 10 mg /Nm3 before use. (A) 15-30 (B) 1-2 (C) 70-100 (D) 150-200

Last Answer : (A) 15-30

Description : Which of the following is the most poisonous gas? (A) Coke oven gas (B) Producer gas (C) Blast furnace gas (D) L.D. converter gas

Last Answer : (D) L.D. converter gas

Description : Coke oven gas compared to blast furnace gas is (A) More explosive and inflammable (B) Less poisonous (C) Lighter (D) All (A), (B) and (C)

Last Answer : (D) All (A), (B) and (C)

Description : Which of the following has the highest theoretical flame temperature? (A) Blast furnace gas (B) Hydrogen (C) Acetylene (D) Coke oven gas

Last Answer : (C) Acetylene

Description : Out of the following fuels, the difference between gross and net calorific value will be minimum in case of (A) Coke oven gas (B) Water gas (C) Natural gas (D) Blast furnace gas

Last Answer : (D) Blast furnace gas

Description : Yield of blast furnace gas is about __________ Nm3 /ton of pig iron. (A) 300 (B) 2000 (C) 5000 (D) 10000

Last Answer : (B) 2000

Description : Which of the following combustibles is absent in blast furnace gas? (A) H2 (B) CH4 (C) CO (D) None of these

Last Answer : (B) CH4

Description : High ash containing coke (A) Produces more slag when used in the blast furnace (B) Has poor strength and abrasion resistance (C) Is desirable in producer gas manufacture (D) None of these

Last Answer : (A) Produces more slag when used in the blast furnace

Description : Percentage of nitrogen in blast furnace gas may be around (A) 5 (B) 25 (C) 55 (D) 80

Last Answer : (C) 55

Description : The calorific value is the highest out of the following for (A) Producer gas (B) Water gas (C) Coke oven gas (D) Blast furnace gas

Last Answer : (C) Coke oven gas

Description : Blast furnace gas compared to coke oven gas has (A) Lower ignition temperature (B) Narrower limit of inflammability (C) Higher calorific value (D) Lower theoretical flame temperature

Last Answer : (D) Lower theoretical flame temperature

Description : Coke oven gas after passing through return electrostatic tar precipitator (RETP) is used for the (A) Hot scarfing of steel slabs (B) Mixing with blast furnace gas (C) Coke oven battery heating (D) Steel ladle drying

Last Answer : (C) Coke oven battery heating

Description : Largest constituent of blast furnace gas is (A) N2 (B) CO (C) CO2 (D) H2

Last Answer : (A) N2

Description : Blast furnace gas is a very poisonous gas because of its predominantly high __________ content. (A) H2O (B) CO2 (C) CO (D) CH4

Last Answer : (C) CO

Description : Percentage of carbon monoxide in blast furnace gas may be around (A) 8 (B) 14 (C) 22 (D) 52

Last Answer : (C) 22

Description : Blast furnace gas constitutes mainly of (A) N2 & CH4 (B) N2 & H2 (C) N2 & CO (D) CH4 & CO2

Last Answer : (C) N2 & CO

Description : Calorific value of blast furnace gas is around __________ KCal/Nm3 . (A) 850 (B) 1800 (C) 4200 (D) 6500

Last Answer : (A) 850

Description : Suspended solid present in the waste water generated in blast furnace gas cooling and cleaning plant is removed by (A) Biological oxygen pond (B) Radial settling tank (thickener) using coagulant (lime & ferrous sulphate) (C) Lagoons (D) Filtration

Last Answer : (B) Radial settling tank (thickener) using coagulant (lime & ferrous sulphate)

Description : Which is the most efficient dust removal equipment for removal of submicronic dust particles from blast furnace gas? (A) Packed scrubber (B) Gravity settling chamber (C) Electrostatic precipitator (D) Hydrocyclone

Last Answer : (C) Electrostatic precipitator