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Petroleum Refinery Engineering

Petroleum Refinery Engineering
Extractor temperature is maintained at -20°C in Edeleanu process to reduce the __________ of kerosene.

Aromatics
Naphthenes
Paraffins
Smoke point

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Petroleum Refinery Engineering
Waxy crudes are treated with chemical additives mainly to

Precipitate wax
Depress its pour point
Dissolve wax
Remove wax

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Petroleum Refinery Engineering
Which of the following does not require preheating during storage in the storage tank as well as during atomisation through burners?

PCM
Light diesel oil
Tar
Low viscosity furnace oil

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Petroleum Refinery Engineering
Higher boiling fractions like atmospheric residue is distilled under vacuum at low temperature because at high temperature, there is a tendency of the predominance of

Discoloration
Coking
Gum formation
Thermal cracking

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Petroleum Refinery Engineering
Smoke point of kerosene expresses its

Lamp wick wetting characteristics
Burning characteristics
Luminosity characteristics
Aromatic content directly

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Petroleum Refinery Engineering
The main reaction in reforming is the

Saturation of olefins
Hydrogenation of naphthenes
Hydrocracking of paraffins
Dehydrogenation of naphthenes

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