class 10 science ncert activity solution 6.3 observation?
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Iodine does not turn starch treated with saliva into blue colour.
Explanation: Saliva containssalivary amylase enzyme. It degrades starch into simple sugar. Iodine does not act on the simple sugar. Hence solution treated with saliva is not turned blue.
Inference: Saliva degrades the starch.
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