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

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
by

1 Answer

Answer :

(B) Act as an antioxidant
by

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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

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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

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

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Addition of stabiliser during PVC manufacture is done to (A) Improve its impact strength (B) Improve its elasticity (C) Reduce the melt viscosity & glass transition temperature (D) Prevent its thermal degradation

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One of the steps during refining of cane sugar consists of addition ofhydrated lime to the sugar syrup followed by carbonation of the resultingsolution. The purpose of this step is to(A) Adjust the pH of the syrup(B) Remove the coloring matter from the syrup(C) Reduce the viscosity of the syrup(D) Improve the rate of crystallisation of sugar

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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

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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

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

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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?

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Do fuel efficient cars typically use higher octane gasoline?

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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

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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

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