WAEC Chemistry 2013 Objective — Question 40
Question 40 of 50 from the West African Examinations Council (WAEC) Chemistry 2013 Objective paper, with the correct answer and a full explanation.
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Which of the following organic compounds would decolourize bromine water?
- A. BenzeneCorrect
- B. Cyclobutane
- C. Hexane
- D. Pentane
Explanation
The reaction with bromine water is a test for unsaturation. Since benzene is an unsaturated compound, it will react with bromine water. Alkenes and alkynes are more notable for this reaction, but benzene (despite its aromaticity being generally resistant) is given here per the printed answer key as A.
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