Answer:
Distillation.
Explanation:
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In this case, by considering the attached file, which depicts the process of distillation, whereby miscible liquids are separated out by firstly boiling and consequently condensing the liquid with the lowest boiling point so that the liquid with the highest boiling point remains in the flask. This process is widely used in the oil gas industry as lots of heavy (high boiling points) and light (low boiling points) produces can be obtained via distillation.
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