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What are two compounds obtained by the fractional distillation of petroleum that are not used as fuel?

Fractional distillation is the process of converting crude petroleum to useful products. The process makes use of the differences in the boiling points of various constituents of petroleum. Depending on their boiling points, different products are obtained at different locations in the distillation column. 


The commonly obtained products include gasoline (or petrol), diesel, kerosene, liquified petroleum gas, naptha, paraffin wax, etc. Many of the products of fractional distillation of petroleum are used as fuels, including gasoline, diesel, and kerosene, among others. Paraffin wax and asphalt are among the products that are not used as fuels. Asphalt is commonly used for making asphalt concrete and road construction. Paraffin wax is commonly used in food industry, in candle making and for lubrication purposes. 


Lubricating oil is another by-product of petroleum refining that is not used as a fuel.


Hope this helps.

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