Question

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?
○ distillation of a mixture
○ filtration of a pure substance
○ evaporation of a mixture
○ sorting of a pure substance

Explanation:

1. Analyze the process: The teacher describes separating components (gasoline, kerosene, diesel, fuel oil) based on their different boiling points.
2. Evaluate options:

• "distillation of a mixture": Distillation separates mixture components by boiling points (fractional distillation for petroleum products like these).
• "filtration of a pure substance": Filtration separates solids from liquids, not based on boiling points, and pure substances can’t be filtered into parts.
• "evaporation of a mixture": Evaporation removes a liquid (leaving solid), not separating multiple liquids by boiling points.
• "sorting of a pure substance": Pure substances have fixed composition, so no “sorting” of components.

So the process matches distillation of a mixture.

Answer:

A. distillation of a mixture