Description : Which of the following contains least amount of N2? (A) Coke oven gas (B) Blast furnace gas (C) Producer gas (D) Water gas (blue gas)
Last Answer : (A) Coke oven gas
Description : A fertiliser plant is classified as a gas based fertiliser plant, when it uses__________ gas as a source of hydrogen for the manufacture of ammonia. (A) Coke oven (B) Producer (C) Natural (D) Coal
Last Answer : (C) Natural
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 : CO & H2 are the constituents of (A) Producer gas (B) Water gas (C) Coke oven gas (D) All (A), (B) and (C)
Last Answer : (D) All (A), (B) and (C)
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 : 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 : Fertiliser plants get their N2 requirements (A) By fractionation of liquefied air (B) By dissociating oxides of nitrogen (C) From coal gas (coke oven gas) (D) From producer gas
Last Answer : (A) By fractionation of liquefied air
Description : Which of the following gas is mostly used in town for street and domestic lighting and heating? A. Producer gas B. Coal gas C. Mond gas D. Coke oven gas
Last Answer : Answer: B
Description : Pick out the wrong statement: (A) Carburetted water gas is also called blue gas (B) Coals are divided in four species according to their carbon content in Seylor's classification (C) Carbonisation time ... and net calorific value of a fuel is the same, if it does not contain hydrogen or hydrocarbons
Last Answer : (A) Carburetted water gas is also called blue 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 : 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 : Which of the following is the costliest source of hydrogen needed for ammonia manufacture under Indian condition? (A) Electrolysis of water (B) Cryogenic removal of H2 from coke oven gas (C) Steam reforming of naphtha (D) Natural gas cracking
Last Answer : (A) Electrolysis of water
Description : Commercial production of hydrogen for the manufacture of nitrogenous fertilisers is done by (A) Steam reforming of naphtha and cracking of natural gas (B) Electrolysis of water (C) Cryogenic separation of hydrogen from coke oven gas (D) All (A), (B) and (C)
Description : Which of the following is the costliest method for commercial production of hydrogen for ammonia synthesis? (A) H2 separation from coke oven ga (B) Steam reforming of naphtha (C) Cracking of natural gas (D) Electrolysis of water
Last Answer : (D) Electrolysis of water
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
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 : Helium is produced on commercial scale from (A) Air (B) Natural gas (C) Coke oven gas (D) None of these
Last Answer : (B) Natural gas
Description : Which furnace employs natural draft? (A) Coke oven (B) Boiler (C) Rotary kilns (D) L.D. converter
Last Answer : (A) Coke oven
Description : Absorption with chemical reaction' is involved in the removal of (A) Carbon dioxide from gaseous stream using alkaline solution (B) Benzol from coke oven gas using solar oil/wash oil (C) Ammonia ... gas using refrigerated water (D) Tar from coke oven gas in primary gas coolers using chilled water
Last Answer : (A) Carbon dioxide from gaseous stream using alkaline solution
Description : Absorption accompanied with chemical reaction is exemplified by the absorption of (A) Ammonia in water (B) Benzol present in coke oven gas by wash oil (C) SO2 in alkaline solution (D) All (A), (B) and (C)
Last Answer : (C) SO2 in alkaline solution
Description : Removal of __________ exemplifies an adsorption unit operation. (A) Uranium from its ore (B) Water from petrol (C) Ammonia from coke oven gas (D) Mustard oil from mustard seed
Last Answer : (B) Water from petro
Description : Sometimes water is sprayed during coal charging in the coke oven, which helps in (A) Prevention of clinker formation in the oven (B) Controlling the dust nuisance while charging the coal (C) Reducing the cracking of hydrocarbons in ... represented by C + H2O = CO + H2 ) (D) All (A), (B) and (C)
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 : 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
Description : Which of the following is not a commercially used feed-stock for the production of ammonia synthesis gas? (A) Water (B) Naphtha (C) Tar (D) Coal/coke oven gas
Last Answer : (C) Tar
Description : Phenolic water generated in coke ovens & by-product plant of a steel plant are disposed off by (A) Quenching of hot coke (B) Discharging in the river stream (C) Filtration and recycling for cooling coke oven gas (D) None of these
Last Answer : (A) Quenching of hot coke
Description : Hydrogen gas is not produced commercially (for nitrogenous fertiliser manufacture) by (A) Iron-steam reaction (B) Electrolysis of water (C) Steam reforming of naphtha (D) Its cryogenic separation from coke oven gas
Last Answer : (A) Iron-steam reaction
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
Description : Which of the following is the costliest source of getting hydrogen on commercial scale for the manufacture of nitrogenous fertiliser? (A) Coal gasification (B) Steam reforming of naphtha (C) Electrolysis of water (D) Coke oven gas
Last Answer : (C) Electrolysis of water
Description : Producer gas containing least amount of tar is produced by the (A) Partial combustion of coal (B) Partial combustion of large size (< 50 mm) coke (C) High pressure gasification of coal (e.g. in Lurgi gasifier) (D) Atmospheric pressure gasification of coal (e.g., in Kopper-Totzek gasifier)
Last Answer : (B) Partial combustion of large size (< 50 mm) coke
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 : Which of the following is unsuitable fuel for producer gas manufacture? (A) Coke (B) Anthracite (C) Coal having low fusion point of its ash (D) Coal having high fusion point of its ash
Last Answer : (C) Coal having low fusion point of its ash
Description : Traces of liquid tar fog present in coke oven gas is separated using (A) Electrostatic precipitator (B) Cyclone separator (C) Strainer (D) None of these
Last Answer : (A) Electrostatic precipitato
Description : Bog iron used for the adsorption of H2S from coke oven gas is (A) An intimate mixture of saw dust and iron dust (i.e. moist ferric hydroxide) (B) Iron impregnated with resin (usually Bakelite) (C) Carbon free iron (D) None of these
Last Answer : (A) An intimate mixture of saw dust and iron dust (i.e. moist ferric hydroxide)
Description : Ammonia present in the coke oven gas is removed by washing with (A) Caustic solution (B) Dilute ammoniacal liquor (C) Dilute HCl (D) Ethanolamine
Last Answer : (B) Dilute ammoniacal liquor
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 : 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 : 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 : Coke oven gas consists mainly of (A) H2 & CH4 (B) CO & CO2 (C) H2 & CO (D) CH4 & CO
Last Answer : (A) H2 & CH4
Description : The main product of high temperature carbonisation of coal is (A) Coke (B) Ammonia (C) Tar (D) Coke oven gas
Last Answer : (A) Coke
Description : Yield of coke oven gas in low temperature carbonisation of coal is about __________ Nm3 /ton of dry coal. (A) 60 (B) 160 (C) 500 (D) 750
Last Answer : (B) 160
Description : Air/gas ratio for complete combustion will be the highest for (A) LPG (B) Gobar gas (C) Coke oven gas
Last Answer : (A) LPG
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 : Removal of hydrogen from coke oven gas (A) Increases its calorific value (B) Decreases its calorific value (C) Does not alter its calorific value (D) Is not possible on commercial scale
Last Answer : (A) Increases its calorific value
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 : Temperature of coke oven gas just before entering into saturator (for recovery of NH3 ) is about __________ °C. (A) 30 (B) 65 (C) 120
Last Answer : (B) 65
Description : Ammonia content in raw coke oven gas is about __________ gm/Nm3 . (A) 1 (B) 5 (C) 50 (D) 100
Last Answer : (B) 5
Description : Which of the following fuels is generally not used in thermal power plant boiler firing? (A) Furnace oil, light diesel oil and tar/PCM (B) Pulverised coking coal (C) Coal middling from washeries (D) B.F. gas, coke oven gas and L.D. converter gas
Last Answer : (B) Pulverised coking coal
Description : Naphthalene recovered from coke oven gas is used (A) As moisture proof coating on fibres (B) As moth balls (insecticides) (C) As a fuel in furnaces (D) For making electrodes
Last Answer : (C) As a fuel in furnaces
Description : Coke ovens in steel plant are heated by (A) Electricity (B) Coke oven gas (C) Mixed gas (D) Both (B) & (C)
Last Answer : (D) Both (B) & (C)