Why does a cut potato turn blue-black when a few drops of iodine are put on it ? class4
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Explanation:
because it contains starch
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Answer:
When few drops of iodine fall on starch substance, blue- black colour is observed. This is because of the formation of starch-iodine complex that gives blue colour. Thus, this property of Iodine is generally used to test the presence of starch.
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