Chemistry · May / June 2017 · Paper 12 · Question 32
5070Water
Dissolved substances in water can cause eutrophication. How many of the ions shown cause this effect? Cl – CO3 2– Na+ NO3 – PO4 3–
- A1
- B2
- C3
- D4
As printed in the paper
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Correct answer: B. 2
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