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How does reverse osmosis work in the desalination of seawater?

Options

  1. AIt adds more solute to seawater
  2. BIt extracts solute from seawater
  3. CIt applies pressure to squeeze pure water out of seawater
  4. DIt uses freezing to separate water from salt

Correct answer

C. It applies pressure to squeeze pure water out of seawater

Step-by-step solution

The paragraph explains that in reverse osmosis, when pressure higher than the osmotic pressure is applied, pure water is squeezed out of seawater through a semipermeable membrane for desalination.

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