How do you test for proteins?

What is the positive reaction for a protein?

How do you test for reducing sugars?

What is the positive reaction for reducing sugars?

How do you test for starch?

What is the positive reaction for starch?

How do you test for lipids (fats and oils)?

What are the positive results for lipids?

How do you test for Vitamin C?

What is the positive result for Vitamin C?