Chemical Process
Hydrogenation of oil does not

Raise its melting point
Remove double bonds
Improve its resistance to oxidation
None of these

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Chemical Process
In the manufacture of H₂SO₄, vanadium catalyst as compared to platinum catalyst

Handles lower SO₂ content gas (7 -10% SO₂), thus increasing the capital cost of the plant
Has a longer life and is not poisoned by arsenic
All of these
Gives higher conversion efficiency

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