Other questions in this quiz

2. What are the conditions for a coupling reaction?

  • KOH catalyst and methanol
  • aqueous acidic conditions
  • aqueous alkaline conditions
  • concentrated NaOH catalyst

3. What observations would you record during the bromination of phenol?

  • Orange colour disappears - white ppt formed
  • Solution changes colour from orange to brown
  • Orange colour disappears -> colourless solution
  • Solution changes colour from orange to green

4. How would you form the diazo group?

  • React HNO2 with an alicyclic amine under reflux
  • React NaNO2 and HCl with an alicyclic amine under reflux
  • React NaNO2 and HCl with an alicyclic amine under 10 degrees
  • React HNO3 with an alicyclic amine under 10 degrees

5. How would you carry out a test to determine whether a compound was an aldehyde or a ketone?

  • Heat gently with tollens reagent, silver mirror = aldehyde
  • Heat gently with 2,4-DNPH - orange precipitate = aldehyde
  • Oxidise with K2Cr2O7/H2SO4 - colour change of solution = ketone
  • Heat gently with tollens reagent, silver mirror = ketone

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