Q. Which of the following additives improves the cetane number of diesel ?

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Q. In catalytic cracking process, olefins crack __________ times faster than in thermal cracking process.

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Q. Choose the correct statement.

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Q. The main purpose of recycling the byproduct hydrogen gas in the reformer reactor is to

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Q. The order of preference for feedstock to a catalytic reformer is

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Q. True vapour pressure of a petroleum fraction __________ Reid vapour pressure.

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Q. Hydrocracking employs

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Q. Sour crude means the __________ bearing crude.

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Q. The main aim of cracking is to produce

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Q. The general formula of naphthenes is

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Q. 'Solvent naphtha' used mostly as a solvent in paints and perfumery is produced by the __________ of virgin naphtha into small boiling range cuts.

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Q. Which of the following has the highest flash point of all ?

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Q. The characterisation factor of crude petroleum oil is around

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Q. Hydrogen percentage (by weight) in crude petroleum may be about

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Q. Which of the following is an additive used for improving the cetane number of diesel ?

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Q. Tetra-ethyl lead is added in gasoline to

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Q. Crude topping column operates at __________ pressure.

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Q. The amount of tetraethyl lead added to improve the octane number of motor gasoline is around __________ c.c per gallon of petrol.

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Q. Which of the following is the most widely used cracking process in oil refineries ?

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Q. Catalyst used in the catalytic polymerisation is

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