What is the process of removing salt from ocean water called?

What is the process of removing salt from ocean water called?

• A. Desalination
• B. Filtration
• C. Distillation
• D. Evaporation

Answer: (A)

Desalination is the process of removing dissolved salts from seawater to produce fresh water that can be used or drunk. Filtration won’t work here because the salts are dissolved, not just suspended as particles. Desalination can be done in a few ways, with distillation and reverse osmosis being the most common. In distillation, seawater is boiled and the water vapour is collected and condensed into clean water, leaving the salt behind. In reverse osmosis, seawater is forced under pressure through a membrane that blocks the salt ions. Evaporation by itself doesn’t reliably produce desalinated water, but it’s a step in some desalination methods like distillation. So the process described is desalination.

Desalination is the process of removing dissolved salts from seawater to produce fresh water that can be used or drunk. Filtration won’t work here because the salts are dissolved, not just suspended as particles. Desalination can be done in a few ways, with distillation and reverse osmosis being the most common. In distillation, seawater is boiled and the water vapour is collected and condensed into clean water, leaving the salt behind. In reverse osmosis, seawater is forced under pressure through a membrane that blocks the salt ions. Evaporation by itself doesn’t reliably produce desalinated water, but it’s a step in some desalination methods like distillation. So the process described is desalination.