Post-UTME Chemistry 2009 Objective — Question 10
Question 10 of 16 from the Post-UTME Screening (Post-UTME) Chemistry 2009 Objective paper, with the correct answer and a full explanation.
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Which of the following gas is colourless and odourless?
- A. NO2
- B. N2OCorrect
- C. O3
- D. b and c
Explanation
N2O (nitrous oxide) is colourless, though it has a faint sweetish odour; this item's precise intended answer was not fully clear from the scan, and is flagged accordingly.
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