Alkenes: structure and electrophilic addition Quiz
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5 questions, one answer each
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1. Which is the molecular formula of an alkene with four carbon atoms?
- A. C₄H₁₀
- B. C₄H₆
- C. C₄H₈
- D. C₄H₄
2. Which of these is an electrophile?
- A. OH⁻
- B. NH₃
- C. The δ+ hydrogen atom in H–Br
- D. CN⁻
3. Which is the major product of the reaction of propene with hydrogen bromide?
- A. 2-bromopropane
- B. 1-bromopropane
- C. 1,2-dibromopropane
- D. Propan-2-ol
4. What is seen when ethene is bubbled into acidified potassium manganate(VII) solution?
- A. Orange to colourless
- B. Purple to colourless
- C. Colourless to orange
- D. No change
5. A student adds bromine water to an unknown liquid and it stays orange. What can be concluded?
- A. The liquid contains a C=C bond
- B. The liquid is a halogenoalkane
- C. The liquid is an alcohol
- D. The liquid is probably saturated, with no C=C bond