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| Q. |
Which one of the following petroleum refinery products has the lowest boiling point? |
| A. | Kerosene |
| B. | Gasoline |
| C. | Diesel |
| D. | Lubricating oil |
| Answer» D. Lubricating oil | |
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Explanation: Lubricating oil is the most commonly used lubricant because of its wide range of possible applications. The two basic categories of lube oil are mineral and synthetic. |
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