The correct order of the products collected from the fractional distillation column from top to bottom is:

Petroleum gas, petrol, kerosene and bitumen.

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Petrol, petroleum gas, kerosene and bitumen.

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Petroleum gas, kerosene, petrol, and bitumen.

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Petrol, kerosene, petroleum gas and bitumen.

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Solution

The correct option is A Petroleum gas, petrol, kerosene and bitumen.
The fractional distillation column works on the principle that different substances have different boiling points. Heated oil is sent through the distillation column where the temperature decreases as we go up the tower, this implies that the substance with the lowest boiling point can be collected at the top and vice versa.
The order of products collected from the fractional distillation column from top to bottom will be in the order of decreasing boiling point. Hence the correct order is petroleum gas, petrol, kerosene and bitumen.

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Similar questions

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