Q. Ethyl mercaptan is added to the Doctor negative LPG for facilitating the detection of its leakage (by bad odour) to the extent of about __________ ppm.

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Q. CₙH₂ₙ is the general formula for

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Q. Natural gas recovered along with crude oil from oil wells is called wet natural gas which has a higher __________ compared to the dry natural gas.

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Q. Pick out the wrong statement.

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Q. Waxy crudes are treated with chemical additives mainly to

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Q. __________ chloride present in crude petroleum as impurity is the most prolific producer of HCl during distillation.

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Q. Molecular weight of petrol may be about

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Q. Which of the following factors does not govern the mechanism of petroleum formation from organic sources ?

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Q. Vacuum maintained in the vacuum distillation tower of the crude distillation plant is about __________ mm Hg (absolute).

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Q. __________ treatment is done for appreciable improvement in viscosity index of lubricating oil.

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Q. A multigrade lubricating oil means an oil having high

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Q. Most widely used solvent for dewaxing is

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Q. Liquefied Petroleum Gas (LPG) is mainly a mixture of

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Q. Water content in the crude oil as it comes out of oil well may be upto __________ percent.

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Q. Aniline point is the temperature at which

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Q. Pick out the wrong statement.

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Q. Sweetening of petroleum product means the removal of

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Q. Reforming

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Q. Which of the following has maximum hydrogen/carbon ratio (by weight) ?

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

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