Post-UTME Chemistry 2006 Objective — Question 5
Question 5 of 19 from the Post-UTME Screening (Post-UTME) Chemistry 2006 Objective paper, with the correct answer and a full explanation.
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Which of the following ions is a pollutant in drinking water even in trace amounts?
- A. Ca2+
- B. Hg2+Correct
- C. Mg2+
- D. Fe2+
Explanation
Mercury ions are highly toxic even at trace concentrations.
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