Describe how to test a sample of food for protein, starch and sugar.Give the colours that would be seen if the food sample contained protein, starch and sugar.

Final answer: To test a food sample for protein, starch, and sugar, you can use chemical tests. Biuret solution turns purple if protein is present, iodine solution turns blue-black for starch, and Benedict's solution changes color for sugar. Explanation: Testing Food for Protein, Starch, and Sugar To test a sample of food for protein, starch, and sugar, you can perform simple chemical tests. Here's how: Protein Test: Add a few drops of Biuret solution to the food sample. If protein is present, the solution will turn from blue to purple. Starch Test: Apply a few drops of iodine solution to the food sample. If starch is present, the solution will turn from amber to blue-black. Sugar Test: Mix the food sample with Benedict's solution and heat it. If sugar is present, the solution will change from blue to green, yellow, orange, or brick red, depending on the amount of sugar present. Remember, these tests provide only a general indication of the presence of protein, starch, or sugar in the food sample. They do not provide quantitative results. Learn more about How to test a sample of food for protein, starch, and sugar here: brainly.com/question/17506934