Which statement about filtration and color is correct?

Which statement about filtration and color is correct?

• A. Filtration removes dissolved true color from water
• B. Filtration removes color that is in suspension
• C. Filtration changes color but not removal
• D. Filtration completely eliminates all color from water

Answer: (B)

Filtration works by removing particles that are suspended in water. Color in water comes from two sources: substances dissolved in the water and substances that are suspended as particles or colloids. Since filtration physically traps those suspended particles, it can remove color that is in suspension. Dissolved color, on the other hand, remains in solution because there are no particles for the filter to capture, so it usually requires other treatment like chemical oxidation or adsorption to remove. Therefore, the statement that filtration removes color that is in suspension is the best choice.

Filtration works by removing particles that are suspended in water. Color in water comes from two sources: substances dissolved in the water and substances that are suspended as particles or colloids. Since filtration physically traps those suspended particles, it can remove color that is in suspension. Dissolved color, on the other hand, remains in solution because there are no particles for the filter to capture, so it usually requires other treatment like chemical oxidation or adsorption to remove. Therefore, the statement that filtration removes color that is in suspension is the best choice.