BI-1287
Food tests
Biology · Secondary 4 · Medium · Food tests
A student tests a food sample with three reagents.
• Iodine solution: no colour change
• Benedict’s solution (heated): brick‑red precipitate forms
• Ethanol shaken then poured into water: white emulsion forms
Which nutrients are present in the food sample?
• Iodine solution: no colour change
• Benedict’s solution (heated): brick‑red precipitate forms
• Ethanol shaken then poured into water: white emulsion forms
Which nutrients are present in the food sample?
- Fat and reducing sugar
- Fat and starch
- Starch only
- Reducing sugar only
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