WAEC Chemistry 2021 Objective — Question 6
Question 6 of 50 from the West African Examinations Council (WAEC) Chemistry 2021 Objective paper, with the correct answer and a full explanation.
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6. If humid air is polluted by chlorine discharge, the air can be restored by
- A. sprinkling a solid MnO2.
- B. acidified KMnO4.Correct
- C. acidified FeSO4.
- D. saturated NaCl(aq).
Explanation
Acidified KMnO4 is a strong oxidising agent that can be sprinkled to remove/neutralise chlorine contamination in air.
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