Question

multiple - choice question
what is sudan iv used to test for?
proteins
carbs
lipids - fats
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Explanation:

Sudan IV is a fat - soluble dye. It specifically stains lipids (fats) due to its solubility in non - polar substances like fats. Proteins are tested with reagents like biuret, and carbohydrates have their own specific tests such as Benedict's for reducing sugars.

Answer:

lipids - fats