Food Tests: Procedures and Results

What is the first step in the glucose test procedure?

• Add iodine solution to the sample.

• Add Benedict's solution to the sample.

• Add Biuret solution to the sample.

• Add ethanol to the sample.

Which color change indicates the presence of glucose when using Benedict's solution?

• Blue to green/yellow/orange/red

• Blue to purple

• Brown to blue-black

• Colorless to cloudy white

What is the main reagent used in the fats test procedure?

• Benedict's solution

• Iodine solution

• Ethanol

• Biuret solution

What indicates a positive result for fats in the ethanol test?

• A blue-black color

• A purple color

• A cloudy white emulsion

• A red color

Which reagent is used in the protein test procedure?

• Benedict's solution

• Iodine solution

• Biuret solution

• Ethanol

What color change indicates the presence of proteins when using Biuret solution?

• Blue to purple

• Blue to green

• Brown to blue-black

• Colorless to cloudy white

What is the main reagent used in the starch test procedure?

• Benedict's solution

• Iodine solution

• Biuret solution

• Ethanol

What color change indicates the presence of starch when using iodine solution?

• Blue to purple

• Blue to green

• Brown to blue-black

• Colorless to cloudy white

Which of the following is a common food source of glucose?

• Butter

• Bread

• Cheese

• Olive oil

Which of the following is a common food source of fats?

• Rice

• Apples

• Butter

• Lettuce