Question

iodine used to detect presence of starch . it gives strach.​

Answer 1

Answer:

Iodine is used to detect the presence of starch in food. If starch is present in a food product, it turns blue-black colour when iodine solution is added. So, the correct answer is 'Iodine solution'.

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Answer 2

Iodine test. The iodine test is used to test for the presence of starch. ... A transfer of electrons between the starch and iodine changes the arrangement of electrons and absorbs much of the visible light which gives it its dark blue colour. In the absence of starch however, the brown color of the aqueous solution remains.

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