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Biomolecules — BIOLOGY STD 11 Science — Question

Gujarat BoardEnglish MediumSTD 11 ScienceBIOLOGYBiomolecules1 Mark
Question
Iodine turns the starch into blue black colour. Why?
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Answer

Starch forms helical secondary structure and it can hold jodine in the helices; the starch-iodine complex is blue in colour.

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