Water may be treated first by filtration and then by chlorination. Which uses do not require water of this standard?
- A1, 2 and 3
- B1 and 2 only
- C1 and 3 only
- D2 and 3 only
Chemistry 0620 · IGCSE · Water
Water may be treated first by filtration and then by chlorination. Which uses do not require water of this standard?