Oilers/Plant Tenders (HHC) Civil Service Practice Exam

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What does a centrifuge separate?

  1. Gases from liquids

  2. Solid particles from liquids

  3. Heavy liquids from lighter liquids

  4. Fresh water from salt water

The correct answer is: Heavy liquids from lighter liquids

A centrifuge separates mixtures based on the density of the components involved. It operates by spinning the mixture at high speeds, creating a force that causes denser substances to move outward, while lighter substances remain closer to the center. This mechanism is commonly used in various applications, including separating blood components and clarifying liquids by removing solids. While the process can also yield results such as solid particles from liquids, its primary function is more aligned with separating different liquid densities, thus making the correct answer the separation of heavy liquids from lighter liquids. This principle is fundamental in various industrial and laboratory processes, showcasing the utility of centrifuges in achieving effective separation based on density variances.

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