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Petroleum Refinery Engineering Mcqs for Chemical
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>> ________________ treatment is done for appreciable improvement in viscosity index of lubricating oil...
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Q. ________________ treatment is done for appreciable improvement in viscosity index of lubricating oil?
a.
Acid
b.
Solvent extraction
c.
Alkali
d.
Clay
ANSWER: Solvent extraction
Answer & Explanation
No explanation is available for this question!
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