Petroleum is believed to have originated from __________ sources.
A. Vegetable
B. Animal
C. Both A & B
D. Neither A nor B
Answer: Option C
Related Questions on Petroleum Refinery Engineering
Aniline point test of an oil qualitatively indicates the __________ content of an oil.
A. Paraffin
B. Olefin
C. Aromatic
D. Naphthene
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