Q. Detergent is added as an additive in engine lubricating oil to

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Q. Removal of light fractions from crude oil is called its

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Q. Pick out the wrong statement.

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Q. In hydrofining catalytic desulphurisation process for sweetening of petroleum products, use of hydrogen

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Q. The yield of straight run LPG from crude oil is about __________ weight percent.

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Q. Deoiling is the process of removal of oil from wax. It is done by the __________ process.

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Q. Smoke volatility index is equal to smoke point plus

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Q. Mercaptans are added to liquefied petroleum gas (LPG) to

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Q. LSHS is a type of furnace oil, which

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Q. Hydrofining is the most recent and effective method for the

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Q. Isomerisation converts the __________ tot-paraffins.

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Q. Straight run petrol as compared to methyl/ethyl alcohol has

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Q. Crude oil is subjected to vacuum distillation in the last stage, because

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Q. Absolute vapor pressure of petrofuels is found by Reid bomb which is heated in water bath to 100°F. In Reid apparatus, the ratio of the volume of air chamber to that of the liquid fuel chamber is

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Q. Doctor's solution used for sweetening of petroleum products is

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Q. Smoke point of kerosene expresses its

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Q. The characterisation factor of a crude oil is calculated as 12.5. It means that; it is

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Q. Which of the following has the highest octane number ?

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Q. 95% (by volume) of LPG at 760 mm Hg pressure will evaporate at __________ °C.

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Q. A petroleum well is called 'dry', if it contains

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