Test-tube reactions for functional groups

Test-tube reactions for functional groups Quiz

Spec 3.3.6.1 · AQA A-Level Chemistry: Quiz

Studying this course? Keep your progress in one place.

Pick an answer for each. Quizzes never use energy.

5 questions, one answer each

Each answer is checked as you go, with why.

See all 5 questions

  1. 1. Which reagent distinguishes pentanal from pentan-2-one?

    • A. Bromine water
    • B. Sodium carbonate solution
    • C. Tollens' reagent
    • D. Dilute nitric acid

  2. 2. A liquid fizzes when sodium carbonate solution is added. Which functional group is present?

    • A. Alcohol
    • B. Carboxylic acid
    • C. Aldehyde
    • D. Alkene

  3. 3. A liquid turns acidified dichromate(VI) green and gives no silver mirror with Tollens' reagent. What could it be?

    • A. Propanal
    • B. Propanone
    • C. Propan-2-ol
    • D. Propene

  4. 4. A halogenoalkane is warmed with NaOH(aq), acidified with HNO₃, and AgNO₃(aq) is added. A yellow precipitate forms. Which halogen is present?

    • A. Chlorine
    • B. Bromine
    • C. Fluorine
    • D. Iodine

  5. 5. A compound decolourises bromine water. Which functional group is probably present?

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

Quiz