BI-1353
Food tests
Biology · Secondary 4 · Easy · Food tests
A student tests a food sample with iodine solution, Biuret solution and ethanol. The results are:
• iodine: stays yellow-brown
• Biuret: turns purple
• ethanol: forms a cloudy white layer.
Which nutrients are present?
• iodine: stays yellow-brown
• Biuret: turns purple
• ethanol: forms a cloudy white layer.
Which nutrients are present?
- starch and protein
- starch and fat
- protein and fat
- reducing sugar and protein
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