Synthetic routes and problem solving

Synthetic routes and problem solving Quiz

Spec 20.3 · Edexcel International A Level Chemistry: Quiz

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5 questions, one answer each

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  1. 1. What is the overall yield of a route with step yields of 90%, 80% and 50%?

    • A. 36%
    • B. 73%
    • C. 60%
    • D. 50%

  2. 2. Which route adds a carbon atom to bromoethane?

    • A. Aqueous NaOH, heat
    • B. KCN in ethanol, reflux
    • C. Ethanolic NaOH, heat
    • D. Excess NH₃ in ethanol

  3. 3. Which control measure is best for propanal, a volatile flammable liquid?

    • A. Use a Bunsen burner in an open lab
    • B. Pour the waste down the sink
    • C. Use concentrated acid
    • D. Heat with a water bath in a fume cupboard

  4. 4. Which functional group would decolourise bromine water?

    • A. COOH
    • B. OH
    • C. C=C
    • D. C–Br

  5. 5. A student wants an aldehyde from a primary alcohol. What should they do?

    • A. Distil the product off as it forms
    • B. Reflux with excess dichromate(VI)
    • C. Add aqueous NaOH
    • D. Use concentrated sulfuric acid only

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