At what level is chlorine harmful?

Related questions

1. How is chlorine isolated?
2. What happens when cl2 reacts with dry slaked lime?
3. What is the role of MnO2 in a dry cell?
4. What causes high carbon dioxide in blood work?
5. How do you test for carbon dioxide?
6. What is difference between oxidation and reduction?
7. Is bleach and chlorine the same thing?
8. What is oxidation and reduction with examples?
9. How is chlorine prepared from HCl?
10. How do you get carbon dioxide poisoning?

Tags

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2. #level
3. #above
4. #unsafe
5. #getting
6. #their
7. #notice
8. #chlorine
9. #because
10. #people
11. #irritated
12. #burning
13. #swimming
14. #should