Question

In a local water supply, lead levels have increased due to corroded pipes. Drag each item to indicate whether it is effective or ineffective in removing chemical contaminants such as lead. (2 points)
Effective
Ineffective
i ultraviolet radiation
• reverse osmosis
* distillation
: microfiltration

Answer 1

Here is the categorization of the methods you mentioned for removing chemical contaminants such as lead:

**Effective:**
- Reverse osmosis
- Distillation

**Ineffective:**
- Ultraviolet radiation
- Microfiltration

Reverse osmosis and distillation are effective at removing lead and other chemical contaminants, while ultraviolet radiation is primarily used for disinfection (killing microorganisms) and microfiltration is generally not effective for removing dissolved solids such as lead.