BI-207
Food tests
Biology · Secondary 3 · Medium · Food tests
A student tests a food sample for reducing sugars. Which set of steps and result correctly shows that reducing sugar is present?
- Add iodine solution; blue‑black colour forms.
- Add Biuret solution; purple colour forms.
- Add Benedict’s solution and heat; brick‑red precipitate forms.
- Add ethanol then water; cloudy emulsion forms.
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