Other questions in this quiz

2. What is the test for protein?

  • Place a food sample in a test tube of about 1 cm. Add five drops of Buiret solution. If there is protein you will see a purple colour but this may take a few minnutes to appear.
  • Rub a small dry food sample on some white paper. Hold the paper up to the light. Protein will leave a white mark.

3. What is the test for starch?

  • Add two drops of iodine solution to a food sample. If there is any starch you will see a blue or black colour.
  • Place a food sample in a test tube of about 1 cm. Add five drops of Buiret solution. If there is any starch you will see a purple colour but this may take a few minnutes to appear.

4. When using iodine in a food test, what substance are you testing for?

  • Carbohydrate
  • Starch
  • Fat
  • Protein

5. What is starch?

  • A typr of carbohydrate
  • A type of protein
  • A type of fat
  • A type of fibre

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