Description : Petroleum coke is commercially produced by the __________ process. (A) Hydrocracking (B) Visbreaking (C) Fluid catalytic cracking (D) Delayed coking
Last Answer : (D) Delayed coking
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)
Last Answer : (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 processes in oil refinery does not employ ‘cracking’? (A) Coking (B) Visbreaking (C) Pyrolysis (D) None of these
Last Answer : (D) None of these
Description : Which of the following processes consumes hydrogen? (A) Fluid catalytic cracking (B) Visbreaking (C) Propane deasphalting (D) None of these
Last Answer : (A) Fluid catalytic cracking
Description : Removal of light fractions from crude oil is called its (A) Sweetening (B) Dehydration (C) Stabilisation (D) Visbreaking
Last Answer : (C) Stabilisation
Description : In petroleum refining, the process used for conversion of hydrocarbons to aromatics is (A) Catalytic cracking (B) Catalytic reforming (C) Hydrotreating (D) Alkylation
Last Answer : (B) Catalytic reforming
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 : Asphalts are (A) Low molecular weight & low boiling point compounds present in petroleum (B) Desirable in catalytic cracking feedstock, because they produce coke (C) Readily oxidisable and form carbonaceous sludge (D) All (A), (B) & (C)
Last Answer : (C) Readily oxidisable and form carbonaceous sludge
Description : Pick out the wrong statement. (A) Higher temperature is employed in visbreaking than in thermal cracking (B) Pyrolysis is a mild thermal cracking process (C) Lead susceptibility of ... Operating pressure and temperature in thermal cracking process is more than that in catalytic cracking process
Last Answer : (A) Higher temperature is employed in visbreaking than in thermal cracking (B) Pyrolysis is a mild thermal cracking process
Description : When petroleum is refined it is subject to a number of processes including cracking. During the cracking process w) lighter hydrocarbons are combined to form heavier ones x) heavy hydrocarbons ... lighter hydrocarbons are separated by distillation z) oxygen is used to burn the heavier hydrocarbons
Last Answer : ANSWER: X -- HEAVY HYDROCARBONS ARE BROKEN UP INTO LIGHTER ONES
Description : Straight run naphtha is converted into high octane number petrol (gasoline) by catalytic (A) Cracking (B) Polymerisation (C) Reforming (D) Isomerisation
Last Answer : (C) Reforming
Description : Which of the following is not endothermic? (A) Cracking (B) Reforming (C) Gasification (D) Partial oxidation
Last Answer : (D) Partial oxidation
Description : Ammonia synthesis gas is produced from fuel oil by (A) Steam reforming (B) Hydro-cracking (C) Partial oxidation (D) Hydrogenation
Last Answer : (C) Partial oxidation
Description : Ammonia synthesis gas is produced from natural gas by (A) Thermal cracking (B) Steam reforming (C) Partial oxidation (D) Hydrogenation
Last Answer : (B) Steam reforming
Description : Which of the following is not endothermic in nature? (A) Combustion of sulphur (B) Gasification of carbon (C) Thermal cracking of fuel oil (D) Steam reforming of naphtha
Last Answer : (A) Combustion of sulphur
Description : Nickel is not used as a catalyst in the __________ reaction. (A) Shift conversion (B) Oil hydrogenation (C) Steaming reforming of naphtha (D) Ammonia cracking/dissociation
Last Answer : (A) Shift conversion
Description : The molecular structure of the straight-run gasoline is changed by a) reforming b) refining c) cracking d) boiling
Last Answer : Answer: a Explanation: The molecular structure of the straight-run gasoline is changed by reforming and hydrocarbons are decomposed into smaller hydrocarbons by cracking.
Description : Hydrocarbons are decomposed into smaller hydrocarbons by a) reforming b) refining c) cracking d) polymerization
Last Answer : Answer: c Explanation: Hydrocarbons are decomposed into smaller hydrocarbons by cracking while the molecular structure of the straight-run gasoline is changed by reforming.
Description : Liquid hydrocarbons are converted to low molecular weight gaseous hydrocarbons by a process known as (a) hydrogenation (b) reforming (c) cracking (d) reduction
Last Answer : Ans:(c)
Description : Clay treatment of petroleum products (A) Decolorizes & stabilises cracked gasoline (B) Desulphurise straight run gasoline & kerosene (C) Adsorb arsenic from feedstock to catalytic reforming (D) All (A), (B) & (C)
Last Answer : (D) All (A), (B) & (C)
Description : Higher pressure in the reforming reactor (A) Increases coke formation (B) Increases the rate of reaction (C) Produces high octane number gasoline (D) None of these
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 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 : Which one of the following processes aims at producing higher yield of gaseous unsaturated hydrocarbons and aromatics like benzene & toluene? (A) Reforming (B) Pyrolysis (C) Alkylation (D) Hydrocracking
Last Answer : (A) Reforming
Description : Which of the following oil gasification processes is non-catalytic? (A) Semet-Solvay process (B) Segas process (C) Onia-Gegi process (D) Steam reforming of naphtha
Last Answer : (A) Semet-Solvay process
Description : The catalytic cracking of heavier petroleum fraction is done to produce mainly (A) Gasoline (B) Asphalt (C) Diesel oil (D) Tar
Last Answer : (C) Diesel oil
Description : Though increased pressure has a retarding effect on cracking reaction, yet in actual process, a positive pressure of 10-15 kgf/cm2 is maintained during cracking mainly to (A) Increase the yield of ... coke formation (C) Enhance the octane number of gasoline (D) Reduce gum content in gasoline
Last Answer : (B) Suppress coke formation
Description : . The main aim of cracking is to produce (A) Gasoline (B) Lube oil (C) Petrolatum (D) Coke
Last Answer : (A) Gasoline
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 : With increase in the temperature of carbonisation of coal (A) Hydrogen content of coke oven gas increases due to cracking ofhydrocarbons (B) Methane content in the coke oven gas decreases and carbon monoxide content increases ( ... compensated by increase in CO & H2 content (D) All (A), (B) and (C)
Description : Presence of free moisture in coal during its high temperature carbonisation (A) Reduces the coking time (B) Protects the volatile products from pyrolysis (cracking) in the presence of hot coke and hot oven walls (C) Increases the loss of fine coal dust from the ovens when charging (D) None of these
Last Answer : (B) Protects the volatile products from pyrolysis (cracking) in the presence of hot coke and hot oven walls
Description : Steam reforming of naphtha is a source of hydrogen production for nitrogenous fertiliser industry. What is the usual ratio of steam to carbon maintained in the process of steam reforming of naphtha? (A) 1.5 : 1 (B) 3.5 : 1 (C) 10 : 1 (D) 15 : 1
Last Answer : (B) 3.5 : 1
Description : Consider the production of ammonia from methene and air as raw materials. The catalysts used are: (i) __________ for steam reforming of methane and (ii) __________ for ammonia synthesis. (A) (i) - Ni/Al2O3 ; (ii) - Cu - ZnO/ ... (i) - Ni/Al2O3 ; (ii) - Fe/Al2O3 (D) (i) - Fe/Al2O3 ; (ii) - Ni/Al2O3
Last Answer : (C) (i) - Ni/Al2O3 ; (ii) - Fe/Al2O3
Description : Coke is obtained from coal by (a) Distillation (b) Fractional distillation (c) Destructive distillation (d) Cracking
Description : Petroleum coke is used mainly in the (A) Discoloration of yellow glycerine (B) Sugar refining (C) Manufacture of carbon electrode (D) Blast furnace for reduction of iron ore
Last Answer : (C) Manufacture of carbon electrode
Description : In Hydrofining catalytic desulphurisation process for sweetening of petroleum products, use of hydrogen (A) Enhances the desulphurisation process (B) Minimises coke formation (C) Both (A) and (B) (D) Neither (A) nor (B
Last Answer : (C) Both (A) and (B)
Description : Maximum use of petroleum coke is in (A) Adsorption refining operation (B) Fuel gas manufacture (C) Carbon electrode manufacture (D) Iron ore reduction
Last Answer : (C) Carbon electrode manufacture
Description : Petrolatum is (A) Same as petroleum ether (B) Petroleum coke (C) A mixture of microcrystalline wax in viscous hydrocarbon liquids (D) None of these
Last Answer : (C) A mixture of microcrystalline wax in viscous hydrocarbon liquids
Description : Which is the most ideal feed stock for 'coking' process used for the manufacture of petroleum coke? (A) Naphtha (B) Vacuum residue (C) Light gas oil (D) Diesel
Last Answer : (B) Vacuum residue
Description : Naphthalene is removed from coke oven gas by (A) Scrubbing with wash oil (a petroleum product) (B) Adsorbing on bog iron bed (C) Absorbing in vetro-coke solution (D) None of these
Last Answer : (A) Scrubbing with wash oil (a petroleum product)
Description : Which of the following coke has the least percentage of ash? (A) Petroleum coke (B) Beehive coke (C) Foundry coke (D) Metallurgical coke
Last Answer : (A) Petroleum coke
Description : Moist climate is the most favourable factor in the site selection far a (A) Steel plant (B) Textile factory (C) Petroleum refinery (D) Coke oven battery
Last Answer : (B) Textile factory
Description : Visbreaking process is used mainly for making (A) High cetane diesel (B) High octane gasoline (C) Fuel oil (D) Smoke free kerosene
Last Answer : (C) Fuel oil
Description : Fuel oil is subjected to visbreaking to reduce its (A) Pour point (B) Viscosity (C) Pressure drop on pumping (D) All (A), (B) and (C
Last Answer : (D) All (A), (B) and (C
Description : Visbreaking (A) Uses natural gas as feed (B) Is carried out at atmospheric pressure (C) Produces fuel oil of lower viscosity (D) Produces gasoline only
Last Answer : (C) Produces fuel oil of lower viscosity
Description : Stabilisation of gasoline (petrol) means (A) Removal of dissolved gases from it (B) Increasing its oxidation stability (C) Improving its lead susceptibility (D) Increasing its vapour pressure
Last Answer : (A) Removal of dissolved gases from it
Description : Use of catalyst is a must in the ammonia manufacture, because the reaction is reversible as well as the heat of dissociation of N2 & H2 is high. The presence of promoter along with the catalyst helps in ... B) Increasing the effectiveness (C) Improving the strength & heat resistance (D) All a, b & c
Last Answer : (D) All a, b & c
Description : The ratio of oxygen available to the oxygen required for stabilisation of sewage is called the (A) Bacterial stability factor (B) Relative stability (C) Biological oxygen demand (BOD) (D) Oxygen ion concentration
Last Answer : (B) Relative stability
Description : The magnitude of crystal field stabilisation energy (CFSE of `Delta_(1)`) in tetrahedral complexes is considerably less than that in the octahderal fi
Last Answer : The magnitude of crystal field stabilisation energy (CFSE of `Delta_(1)`) in tetrahedral complexes is ... Both point (A) and (B) are wrong.