BI-1360
Food tests
Biology · Secondary 4 · Medium · Food tests
A leaf is tested for starch after being kept in bright light for several hours.
Which sequence of steps is correct before adding iodine solution?
Which sequence of steps is correct before adding iodine solution?
- Boil in water, boil in alcohol, rinse in warm water, then add iodine.
- Boil in alcohol, boil in water, rinse in warm water, then add iodine.
- Boil in water, add iodine, then boil in alcohol.
- Rinse in warm water, add iodine, then boil in alcohol.
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