Benedict's solution is heated with a sample and turns brick-red. What does this show?
Answer and explanation
Correct answer: B. A reducing sugar is present
Benedict's solution changes from blue to green, yellow, orange and finally brick-red with increasing amounts of reducing sugar.
Answer: A reducing sugar is present.
Why not the others: Starch is present: iodine solution tests for starch. Protein is present: biuret reagent tests for protein. Fat is present: ethanol or Sudan III tests for fat.
Answer: A reducing sugar is present.
Why not the others: Starch is present: iodine solution tests for starch. Protein is present: biuret reagent tests for protein. Fat is present: ethanol or Sudan III tests for fat.
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