Answer:
Explanation: SOLID SAMPLE :
1. Peel off the skin of any vegetables e.g. potato and fruits as these are often impermeable. Use a clean spatula to remove samples of powdered food. Avoid cross-contamination with other foods.
2. Add a few ( 2-3) drops of bench iodine solution potassium to a piece of solid food on a white tile.
3.Make observations.
LIQUID SAMPLE:
1. Add 10 cm3 of the liquid food sample to a clean, dry test tube.
2.Add about 5 drops of iodine solution to the test tube.
3.Note any colour changes.
4.To prepare a control, perform steps 1 -3 for de-ionized water.