10. Fuel oil, gasoline, kerosene and naphtha are four fractions obtained from the fractional distillation of petroleum.
What is the order of the boiling points of these fractions?

please tell me your class

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answer : a model is often used to explain and make things easier to understand when any scientific topic needs to be demonstrated and explained.

as in this case where a scientist wants to use a model to present the results of his detailed scientific investigation. he should do it as it will him to make the audience understand the concept in a much better way. also, it can be changed according to new scientific understandings.

answer: i dont know the answer but this might

explanation:

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