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PETROLEUM REFINERY ENGINEERING

Petroleum Refinery Engineering
The doctor's solution comprises of sodium plumbite in

Water
Alcohal
Aqueous caustic soda
Soda ash

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Petroleum Refinery Engineering
Deoiling is the process of removal of oil from wax. It is done by the __________ process.

Resettling
All of these
Solvent extraction
Sweating

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Petroleum Refinery Engineering
A good lubricant should have high

Pour point
None of these
Volatility
Viscosity index

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Petroleum Refinery Engineering
Which is almost absent in crude petroleum?

Cycloparaffins
Olefins
Naphthenes
Mercaptans

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Petroleum Refinery Engineering
Vacuum maintained in the vacuum distillation column in oil refinery is in the range of about __________ mm Hg absolute.

1 to 5
30 to 80
450 to 500
250 to 350

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