JAMB Chemistry 2010 Objective — Question 49
Question 49 of 50 from the Joint Admissions and Matriculation Board (JAMB) Chemistry 2010 Objective paper, with the correct answer and a full explanation.
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49. Two hydrocarbons X and Y were mixed with bromine water. X decolourised the solution and Y did not. Which class of compound does Y belong to? A. Alkenes B. Alkynes C. Benzene D. Alkanes
- A. Alkenes
- B. Alkynes
- C. Benzene
- D. AlkanesCorrect
Explanation
Alkanes do not decolourize bromine water, while alkenes and alkynes do, so the hydrocarbon Y that did not decolourise the water belongs to the alkanes.
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