Q. H/C ratio (by weight) for the same number of carbon atoms is the highest in case of

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

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Q. Higher vapour pressure of gasoline indicates

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Q. 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

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Q. Pour point of a petrofuel is

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Q. Pyrolysis of kerosene or natural gasoline is done to produce mainly the

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Q. Which of the following fractions of petroleum contains maximum sulphur ?

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Q. Reforming converts

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Q. Percentage of straight run gasoline in a typical crude oil may be around

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Q. Road grade bitumen is produced from vacuum residue by its

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Q. Which of the following is the easiest to crack?

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Q. Flash point of a liquid petroleum fuel gives an idea about its

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Q. Clay treatment of petroleum products

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Q. Presence of predominantly large quantity of aromatics (polynuclear) is not desirable in aviation fuel, because it has

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Q. Catalyst used in isomerisation process is

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Q. Octane number of n-heptane is assumed to be

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Q. Vacuum maintained in the vacuum distillation column in oil refinery is in the range of about __________ mm Hg absolute.

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Q. Which of the following petroleum products contain minimum sulphur ?

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Q. Concentration of H₂SO₄ catalyst in alkyla-tion is kept between 90-98%, because H₂SO₄ having concentration

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Q. High aniline point of a petrofuel (say diesel) indicates that

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