A rotating drum screen removes ___ with the lowest water content

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Multiple Choice

A rotating drum screen removes ___ with the lowest water content

Explanation:
Rotating drum screens separate phases by how much water they carry. Oil and water are immiscible, so oil forms a separate phase that contains very little water. Among the options, oil has the lowest water content, so the screen is removing this dry oil fraction. Sludge is a water-rich mixture, and water itself is, by definition, full of water content; gas isn’t a liquid phase described by water content in this context.

Rotating drum screens separate phases by how much water they carry. Oil and water are immiscible, so oil forms a separate phase that contains very little water. Among the options, oil has the lowest water content, so the screen is removing this dry oil fraction. Sludge is a water-rich mixture, and water itself is, by definition, full of water content; gas isn’t a liquid phase described by water content in this context.

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