Which of the following gasoline (unleaded) has the least octane number? (A) Catalytically cracked gasoline (B) Straight run gasoline (C) Catalytically reformed gasoline (D) Polymer gasoline

Which of the following gasoline (unleaded) has the least octane
number?
(A) Catalytically cracked gasoline
(B) Straight run gasoline
(C) Catalytically reformed gasoline
(D) Polymer gasoline
by

1 Answer

Answer :

(B) Straight run gasoline
by

Related questions

Which of the following categories of gasoline has the highest lead susceptibility? (A) Straight run gasoline (B) Platinum reformed gasoline (C) Catalytical cracked gasoline (D) Polymer gasoline

Description : Which of the following categories of gasoline has the highest lead susceptibility? (A) Straight run gasoline (B) Platinum reformed gasoline (C) Catalytical cracked gasoline (D) Polymer gasoline

Last Answer : (A) Straight run gasoline

Octane number (unleaded) of reformed gasoline may be upto (A) 60 (B) 70 (C) 80 (D) 90

Description : Octane number (unleaded) of reformed gasoline may be upto (A) 60 (B) 70 (C) 80 (D) 90

Last Answer : (D) 90

Which of the following reactions is undesirable in the production of catalytically reformed gasoline? (A) Dehydrogenation of Naphthene (B) Dehydrogenation of lower paraffins (C) Dehydrocyclization of higher paraffins (D) Isomerisation of paraffins

Description : Which of the following reactions is undesirable in the production of catalytically reformed gasoline? (A) Dehydrogenation of Naphthene (B) Dehydrogenation of lower paraffins (C) Dehydrocyclization of higher paraffins (D) Isomerisation of paraffins

Last Answer : (B) Dehydrogenation of lower paraffins

Gasoline extracted from natural gas (by compression and cooling) is called the __________ gasoline. (A) Polymer (B) Unleaded (C) Casing head (D) Straight run

Description : Gasoline extracted from natural gas (by compression and cooling) is called the __________ gasoline. (A) Polymer (B) Unleaded (C) Casing head (D) Straight run

Last Answer : (B) Unleaded

Octane number (unleaded) of gasoline produced by isomerisation of butane may be about (A) 45 (B) 55 (C) 70 (D) 90

Description : Octane number (unleaded) of gasoline produced by isomerisation of butane may be about (A) 45 (B) 55 (C) 70 (D) 90

Last Answer : (C) 70

Paraffin base crude oil as compared to asphalt base crude gives (A) Higher yield of straight run gasoline (B) Higher octane number gasoline (C) Lower viscosity index lube oil (D) Poorer yield of lube oil

Description : Paraffin base crude oil as compared to asphalt base crude gives (A) Higher yield of straight run gasoline (B) Higher octane number gasoline (C) Lower viscosity index lube oil (D) Poorer yield of lube oil

Last Answer : (A) Higher yield of straight run gasoline

Straight run naphtha is converted into high octane number petrol (gasoline) by catalytic (A) Cracking (B) Polymerisation (C) Reforming (D) Isomerisation

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

Power alcohol as compared to straight run gasoline has lower (A) Calorific value (B) Octane number (C) Specific gravity (D) Viscosity

Description : Power alcohol as compared to straight run gasoline has lower (A) Calorific value (B) Octane number (C) Specific gravity (D) Viscosity

Last Answer : (A) Calorific value

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)

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)

Research octane number refers to the (A) Low octane number motor fuels (B) High octane number motor fuels (C) High octane number aviation fuels (D) Unleaded motor fuels

Description : Research octane number refers to the (A) Low octane number motor fuels (B) High octane number motor fuels (C) High octane number aviation fuels (D) Unleaded motor fuels

Last Answer : (D) Unleaded motor fuels

Straight run petrol as compared to methyl/ethyl alcohol has (A) Lower calorific value (B) Lower octane number (C) Higher specific gravity (D) Higher ignition temperature

Description : Straight run petrol as compared to methyl/ethyl alcohol has (A) Lower calorific value (B) Lower octane number (C) Higher specific gravity (D) Higher ignition temperature

Last Answer : (B) Lower octane number

Why is gasoline still called "unleaded?"?

Description : Why is gasoline still called "unleaded?"?

Last Answer : Nostalgia? Takes me back to the mid 70s. We had a Ford in he White House, and still no gas.

What does it cost a refinery to produce just one gallon of regular unleaded gasoline?

Description : What does it cost a refinery to produce just one gallon of regular unleaded gasoline?

Last Answer : According to DW-World the price of Petrol in Germany in 2007 was made up as follows: 0.4 €cent per litre for getting crude oil out of the ground. 0.1 €cent per litre for getting across the Suez ... That is about 6.6 dollars per gallon for you Americans. (assuming I did not screw up the conversion)

How long is unleaded gasoline good for?

Description : How long is unleaded gasoline good for?

Last Answer : Gasoline oxidizes over time, which produces gums. These turn into a kind of varnish that builds up on engine parts during combustion, and will eventually impair efficiency. How quickly that oxidation happens ... the gums that have formed. You can sometimes see clumps of the gums in very oxidized gas

Polymerisation (A) Produces i-octane from cracked gases containing i-butane and butene (B) Causes olefins to combine with each other (C) Causes aromatics to combine with each other (D) Is aimed at producing lubricating oil

Description : Polymerisation (A) Produces i-octane from cracked gases containing i-butane and butene (B) Causes olefins to combine with each other (C) Causes aromatics to combine with each other (D) Is aimed at producing lubricating oil

Last Answer : (B) Causes olefins to combine with each other

Octane number of gasoline is a measure of its (A) Resistance to knock (B) Ignition delay (C) Ignition temperature (D) Smoke point

Description : Octane number of gasoline is a measure of its (A) Resistance to knock (B) Ignition delay (C) Ignition temperature (D) Smoke point

Last Answer : (A) Resistance to knock

The colour of gasoline is an indication of its (A) Octane number (B) Lead susceptibility (C) Gum forming tendency & thoroughness of refining (D) None of these

Description : The colour of gasoline is an indication of its (A) Octane number (B) Lead susceptibility (C) Gum forming tendency & thoroughness of refining (D) None of these

Last Answer : (C) Gum forming tendency & thoroughness of refining

__________ determination is not a very significant and important test for gasoline. (A) Gum & sulphur content (B) Viscosity (C) Octane number (D) Reid vapor pressure

Description : __________ determination is not a very significant and important test for gasoline. (A) Gum & sulphur content (B) Viscosity (C) Octane number (D) Reid vapor pressure

Last Answer : (B) Viscosity

Phenols are added in gasoline to (A) Improve the octane number(B) Act as an antioxidant(C) Reduce its viscosity(D) Increase its pour point

Description : Phenols are added in gasoline to (A) Improve the octane number (B) Act as an antioxidant (C) Reduce its viscosity (D) Increase its pour point

Last Answer : (B) Act as an antioxidant

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 light distillates (B) Suppress coke formation (C) Enhance the octane number of gasoline (D) Reduce gum content in gasoline

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

The octane number of aviation gasoline may be (A) 79 (B) 87 (C) 97 (D) > 100

Description : The octane number of aviation gasoline may be (A) 79 (B) 87 (C) 97 (D) > 100

Last Answer : (D) > 100

Pick out the wrong statement. (A) Alkylation produces a larger iso-paraffin (having higher octane number) from the reaction of an olefin with smaller iso-paraffin (B) Catalytic alkylation processes use HF, AlCl3 & H2SO4 as Catalysts (C) All the alkylation processes use very high temperature (> 1000°C) (D) Gasoline having an octane number of 90 can be produced by alkylation process

Description : Pick out the wrong statement. (A) Alkylation produces a larger iso-paraffin (having higher octane number) from the reaction of an olefin with smaller iso-paraffin (B) Catalytic alkylation processes use HF ... (> 1000°C) (D) Gasoline having an octane number of 90 can be produced by alkylation process

Last Answer : (C) All the alkylation processes use very high temperature (> 1000°C)

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 : 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

Last Answer : (D) None of these

Choose the correct statement regarding thermal cracking. (A) Moderate changes in operating temperature does not change the depth of cracking (B) Increased residence time results in the decreased severity of cracking (C) At low pressure, the yield of lighter hydrocarbons are more (D) Greater depth of cracking gives lower octane number gasoline

Description : Choose the correct statement regarding thermal cracking. (A) Moderate changes in operating temperature does not change the depth of cracking (B) Increased residence time results in the decreased ... of lighter hydrocarbons are more (D) Greater depth of cracking gives lower octane number gasoline

Last Answer : (D) Greater depth of cracking gives lower octane number gasoline

The amount of tetraethyl lead added to improve the octane number of motor gasoline is around __________ c.c per gallon of petrol. (A) 3 (B) 300 (C) 3000 (D) 1000

Description : The amount of tetraethyl lead added to improve the octane number of motor gasoline is around __________ c.c per gallon of petrol. (A) 3 (B) 300 (C) 3000 (D) 1000

Last Answer : (A) 3

Octane number of gasoline produced by two stage fluidised catalytic cracking process is (A) 80 (B) 87 (C) 92 (D) 97

Description : Octane number of gasoline produced by two stage fluidised catalytic cracking process is (A) 80 (B) 87 (C) 92 (D) 97

Last Answer : (D) 97

Pick out the correct statement pertaining to catalytic cracking. (A) With increase in the reactor pressure, octane number of gasoline decreases (B) With increase in the reactor temperature, gasoline yield decreases for a given conversion (C) Percentage conversion increases with increase in the catalyst to oil ratio (D) All (A), (B) and (C)

Description : Pick out the correct statement pertaining to catalytic cracking. (A) With increase in the reactor pressure, octane number of gasoline decreases (B) With increase in the reactor temperature, gasoline yield decreases for a given ... with increase in the catalyst to oil ratio (D) All (A), (B) and (C)

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

In catalytic cracking, the (A) Gasoline obtained has a very low octane number (B) Pressure & temperature is very high (C) Gasoline obtained has very high aromatic content (D) Gasoline obtained has very high amount of gum forming compounds

Description : In catalytic cracking, the (A) Gasoline obtained has a very low octane number (B) Pressure & temperature is very high (C) Gasoline obtained has very high aromatic content (D) Gasoline obtained has very high amount of gum forming compounds

Last Answer : (C) Gasoline obtained has very high aromatic content

Clay treatment is used to remove (A) Salt from the crude oil (B) Colour & dissolved gases from cracked gasoline (C) Wax from lube oil (D) None of these

Description : Clay treatment is used to remove (A) Salt from the crude oil (B) Colour & dissolved gases from cracked gasoline (C) Wax from lube oil (D) None of these

Last Answer : (C) Wax from lube oi

Catalytic desulphurisation process used for sweetening of straight run gasoline and kerosene uses __________ as catalyst. (A) Bauxite (B) Fuller’s earth (C) Activated clay(D) All (A), (B) & (C)

Description : Catalytic desulphurisation process used for sweetening of straight run gasoline and kerosene uses __________ as catalyst. (A) Bauxite (B) Fuller’s earth (C) Activated clay (D) All (A), (B) & (C)

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

The most commonly used feed stock for the reforming reactor is (A) Heavy fuel oil (B) Residuum (C) Straight run gasoline (D) Casing head gasoline

Description : The most commonly used feed stock for the reforming reactor is (A) Heavy fuel oil (B) Residuum (C) Straight run gasoline (D) Casing head gasoline

Last Answer : (C) Straight run gasoline

Percentage of straight run gasoline in a typical crude oil may be around (A) 6 (B) 18 (C) 38 (D) 52

Description : Percentage of straight run gasoline in a typical crude oil may be around (A) 6 (B) 18 (C) 38 (D) 52

Last Answer : (D) 52

Feed for reforming is generally (A) Naphtha or straight run gasoline (B) Reduced crude (C) Vacuum gas oil

Description : Feed for reforming is generally (A) Naphtha or straight run gasoline (B) Reduced crude (C) Vacuum gas oil

Last Answer : (A) Naphtha or straight run gasoline

Octane numbers of motor gasoline used in India and America are respectively (A) 87 & 94 (B) 94 & 87 (C) 94 & 100 (D) 83 & 100

Description : Octane numbers of motor gasoline used in India and America are respectively (A) 87 & 94 (B) 94 & 87 (C) 94 & 100 (D) 83 & 100

Last Answer : (A) 87 & 94

Visbreaking process is used mainly for making (A) High cetane diesel (B) High octane gasoline (C) Fuel oil (D) Smoke free kerosene

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

Tetra-ethyl lead is added in gasoline to (A) Increase its smoke point (B) Reduce gum formation(C) Reduce the pour point(D) Increase its octane numbe

Description : Tetra-ethyl lead is added in gasoline to (A) Increase its smoke point (B) Reduce gum formation (C) Reduce the pour point (D) Increase its octane numbe

Last Answer : (D) Increase its octane numbe

Methyl tertiary butyl ether (MTBE), a high octane (octane no. = 115) gasoline blending component is produced by the simple additive reaction of isobutylene with (A) Methyl alcohol (B) Ethyl alcohol (C) Methane (D) Ethane

Description : Methyl tertiary butyl ether (MTBE), a high octane (octane no. = 115) gasoline blending component is produced by the simple additive reaction of isobutylene with (A) Methyl alcohol (B) Ethyl alcohol (C) Methane (D) Ethane

Last Answer : (A) Methyl alcohol

Limestone powder is injected during pulverised coal burning in boilers to __________ the flue gases. (A) Reduce SO2 content in (B) Catalytically convert SO2 to SO3 in (C) Increase the dew point of (D) None of these

Description : Limestone powder is injected during pulverised coal burning in boilers to __________ the flue gases. (A) Reduce SO2 content in (B) Catalytically convert SO2 to SO3 in (C) Increase the dew point of (D) None of these

Last Answer : (A) Reduce SO2 content in

Octane number of gasoline is obtained by comparing the performance of the engine when running on a mixture of the following hydrocarbons A. ethane and methane B. normal heptane and iso-octane C. iso-heptane and octane D. iso-octane and TEL

Description : Octane number of gasoline is obtained by comparing the performance of the engine when running on a mixture of the following hydrocarbons A. ethane and methane B. normal heptane and iso-octane C. iso-heptane and octane D. iso-octane and TEL

Last Answer : ANSWER : B

Gasoline with an octane number of 90 is equivalent in knocking characteristics to a mixture of heptane and isooctane of the following composition : (a) 20% heptane + 80% isooctane (b) 90% heptane + 10% isooctane (c) 80% heptane + 20% isooctane (d) 10% heptane + 90% isooctane

Description : Gasoline with an octane number of 90 is equivalent in knocking characteristics to a mixture of heptane and isooctane of the following composition : (a) 20% heptane + 80% isooctane (b) 90% heptane + 10% isooctane (c) 80% heptane + 20% isooctane (d) 10% heptane + 90% isooctane

Last Answer : 10% heptane + 90% isooctane

Octane number is related to (a) Gasoline (b) Kerosene oil (c) Diesel oil (d) Lubricating oi

Description : Octane number is related to (a) Gasoline (b) Kerosene oil (c) Diesel oil (d) Lubricating oi

Last Answer : Gasoline

The molecular structure of the straight-run gasoline is changed by a) reforming b) refining c) cracking d) boiling

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.

Is it true that higher octane gasoline is consumed more slowly by engines,and it doesn't pay to purchase regular gasoline solely to save $$ when it is not required for your vehicle?

Description : Is it true that higher octane gasoline is consumed more slowly by engines,and it doesn't pay to purchase regular gasoline solely to save $$ when it is not required for your vehicle?

Last Answer : No it is not true that premium gas burns slower than reg. It is a complete waste of money to use a higher grade than required by the manufacturer.

Do fuel efficient cars typically use higher octane gasoline?

Description : Do fuel efficient cars typically use higher octane gasoline?

Last Answer : No, higher octane fuel is only necessary for higher performance cars. Highly efficient cars can usually use the lowest octane fuels, because they are not designed for performance.

Use of gasoline blend like tetraethyl lead in internal combustion engine a. increases the octane rating of the fuel b. allows engine to operate at higher compression ratio c. avoids auto-ignition of fuel d. all of the above

Description : Use of gasoline blend like tetraethyl lead in internal combustion engine a. increases the octane rating of the fuel b. allows engine to operate at higher compression ratio c. avoids auto-ignition of fuel d. all of the above

Last Answer : ANSWER d. all of the above

Which of the following methods can be used to increase the octane rating of gasoline? (a) Adding branched-chain alkanes (b) Adding tetraethyllead (c) Adding aromatic hydrocarbons (d) All of these

Description : Which of the following methods can be used to increase the octane rating of gasoline? (a) Adding branched-chain alkanes (b) Adding tetraethyllead (c) Adding aromatic hydrocarbons (d) All of these

Last Answer : All of these

The octane rating of gasoline provides information on(a) its antiknock properties(b) its ignition properties(c) its percentage proportion of octane(d) its percentage content of isooctane

Description : The octane rating of gasoline provides information on (a) its antiknock properties (b) its ignition properties (c) its percentage proportion of octane (d) its percentage content of isooctane

Last Answer : its antiknock properties

Choose the correct statement. (A) Octane number of i-octane is zero (B) Octane number of paraffins increases with increasing number of carbon atoms (C) Branched chain paraffins have higher octane number than straight chain paraffins with same number of carbon atoms (D) The aromatics have lower octane number than naphthenes with same number of carbon atoms

Description : Choose the correct statement. (A) Octane number of i-octane is zero (B) Octane number of paraffins increases with increasing number of carbon atoms (C) Branched chain paraffins have higher octane ... atoms (D) The aromatics have lower octane number than naphthenes with same number of carbon atoms

Last Answer : (A) Octane number of i-octane is zero

H2S present in naphtha reformed gas is removed by absorbing with (A) Ethanolamine (B) K2CO3 (C) HCl (D) Vacuum gas oi

Description : H2S present in naphtha reformed gas is removed by absorbing with (A) Ethanolamine (B) K2CO3 (C) HCl (D) Vacuum gas oi

Last Answer : (A) Ethanolamine

Midrex process of sponge iron production uses reformed natural gas as the reducing agent, which uses iron ore in the form of (A) Lumps (B) Pellets (C) Briquettes (D) Sinte

Description : Midrex process of sponge iron production uses reformed natural gas as the reducing agent, which uses iron ore in the form of (A) Lumps (B) Pellets (C) Briquettes (D) Sinte

Last Answer : Option B