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Petroleum Refinery Engineering

Petroleum Refinery Engineering
Sweetening of petroleum product means the removal of

Water
Organic impurities
Sulphur & its compounds
Wax

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Petroleum Refinery Engineering
Which of the following processes in oil refinery does not employ 'cracking'?

Visbreaking
None of these
Pyrolysis
Coking

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Petroleum Refinery Engineering
Preheating temperature of medium viscosity furnace oil for better atomisation through burner is about __________ °C.

140
90
70
50

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Petroleum Refinery Engineering
Flash point of atmospheric distillation residue is determined by __________ apparates.

Abel
Pensky-Martens (closed cup type)
Cleveland (open cup type)
None of these

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Petroleum Refinery Engineering
Smoke point of a test sample of kerosene is found to be 15 mm. On removal of __________ from it, the smoke point rises to 25 mm.

Aromatics
Olefins
None of these
N-paraffins

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Petroleum Refinery Engineering
Waxes present in petroleum products

Decrease their viscosity
Are not soluble in them
Can be separated out by distillation
Crystallise out at low temperature

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