WAEC Chemistry 2022 Objective — Question 23
Question 23 of 50 from the West African Examinations Council (WAEC) Chemistry 2022 Objective paper, with the correct answer and a full explanation.
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Which of the following gases is alkaline?
- A. NO2
- B. CO2
- C. NH3Correct
- D. N2O
Explanation
Ammonia (NH3) dissolves in water to form ammonium hydroxide, which is alkaline; the other gases listed are acidic or neutral.
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