A teacher makes the following statement.“Gasoline boils at a relatively low temperature (about 150°C). The kerosene is removed at around 200°C, followed by diesel oil at 300°C and fuel oil at around 370°C.”What topic is the teacher most likely talking about?

The teacher is describing how substances in a mixture are separated according to their different boiling points. Gasoline boils off at a lower temperature than kerosene, diesel oil, and fuel oil, so they can be collected at different temperatures during distillation. This is distillation of a mixture, not filtration or sorting of a pure substance.

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