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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Q. Petroleum liquid fuels having flash point greater than 66°C is considered as safe during storage and handling. Which of the following has flash point > 66°C ?

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Q. The solvent used in Barisol dewaxing process is

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Q. Octane number (unleaded) of gasoline produced by isomerisation of butane may be about

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Q. In a refinery petroleum crude is fractionated into gas fraction, light ends, intermediate distillates, heavy distillates, residues and by products. The group of products including gas oil, diesel oil and heavy fuel oil belongs to the fraction

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Q. Feedstock for polymerisation is

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Q. Pick out the correct statement pertaining to catalytic cracking.

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Q. Which of the following is a naphthene ?

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Q. With increase in the number of carbon and hydrogen atoms in hydrocarbon molecules, the density of petroleum products

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