This document outlines three common food tests to identify carbohydrates and proteins. The carbohydrate tests distinguish between complex starches and simple glucose sugars. Starch turns black with iodine, while glucose turns brick red when heated with Benedict's solution. The protein test uses Biuret solutions, where a positive result makes the solution turn lilac blue.

1. Food Tests
Carbohydrate test: Complex (Starch)
•Add a few drops of Iodine.
•Positive test result: Light brown solution turns black.

2. Food Tests
Carbohydrate test: Simple (Glucose)
•Add a few drops of Benedict’s solution and heat gently.
•Positive test result: Light blue solution turns brick red.

3. Food Tests
Protein test
•Add a few drops of Biuret A and Biuret B solution.
•Positive test result: Light blue solution turns lilac.