What does Reverse Osmosis (RO) accomplish in water purification?

• A. Increases water temperature
• B. Removes impurities from water
• C. Recycles used water for future use
• D. Decreases water pressure

Answer: (B)

Reverse Osmosis (RO) is a highly effective water purification process that primarily functions by removing impurities from water. It utilizes a semipermeable membrane to allow the passage of water while blocking contaminants, such as dissolved salts, pathogens, and other unwanted substances. This process results in a significant reduction of total dissolved solids (TDS) and can effectively filter out a wide range of harmful pollutants, including heavy metals and chemicals, leading to the production of clean, purified water.

In the context of water treatment, RO is widely used in various applications, ranging from residential drinking water systems to large-scale industrial water treatment operations. Its ability to address an array of contaminants makes it a favored choice in ensuring safe and high-quality water supply.

The other options do not accurately represent the core function of Reverse Osmosis. Increasing water temperature, recycling used water, and decreasing water pressure do not pertain to the primary role of this purification method.