Petroleum Refinery Engineering - Chemical Engineering Questions and Answers

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Which of the following theories of origin of petroleum does not explain the presence of nitrogen & sulphur compounds in crude oil?

Modern theory

Carbide theory

Engler theory

all (a), (b) and (c)

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Higher vapour pressure of gasoline indicates

low flash point

high breathing loss

both (a) and (b)

neither (a) nor (b)

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Iso-octane is used as a reference substance in the definition of octane number and it is assigned an octane number value of 100. Iso-octance is chemically known as

α-methyl naphthalene.

2-2-4 tri methyl pentane.

1, 3 butadiene.

tetra methyl ethylene.

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Pour point of a petrofuel is

multiple of 3°F.

multiple of 5°F.

5°C below the temperature at which oil ceases to flow.

none of these.

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In catalytic cracking, the

gasoline obtained has a very low octane number.

pressure & temperature is very high.

gasoline obtained has very high aromatic content.

gasoline obtained has very high amount of gum forming compounds.

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LPG stands for

liquid petroleum gas

liquified petrol gas

liquid petrol gas

liquefied petroleum gas

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"Breathing loss" on storage of gasoline occurs due to the

presence of unsaturated air.

fluctuation of ambient temperature during day and night.

both (a) and (b).

neither (a) nor (b).

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Which is an anticing compound ?

Amyl nitrate

Alcohals

Mercaptans

Pyridine

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The terminology used for the bottom most product from the vacuum crude distillation unit is

residual crude

residuum

reduced crude

petrolatum