BI-22
Food tests
Biology · Secondary 3 · Easy · Food tests
A student wants to test a solution for the presence of reducing sugar. Which procedure should she use?
- Add iodine solution; blue‑black colour shows reducing sugar.
- Add Biuret solution; violet colour shows reducing sugar.
- Add Benedict’s solution and heat; brick‑red precipitate shows reducing sugar.
- Add ethanol and water; cloudy emulsion shows reducing sugar.
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