Petroleum Refinery Engineering
Crude oil is subjected to vacuum distillation in the last stage, because

None of these
High boiling point products like heavy fuel oil & lubricating oils are heat sensitive and may decompose
Lighter/low boiling products are prone to thermal decomposition
High purity products can be obtained thereby

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Petroleum Refinery Engineering
Pick out the correct statement about catalytic polymerisation.

Neither A nor B
Both A & B
In H₂SO₄ polymerisation, H₃PO₄ is always used with 2% steam to prevent meta & ortho H₃PO₄ formation, which are inactive
H₂SO₄ polymerisation process gives gasoline rich in unsaturates

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