ayushjha152009 ayushjha152009

02-09-2020
Computers and Technology

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1. Rice paste changes from white to blue black colour when a few drops of iodine solution are added to it. It shows the presence of _______ *

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marisabelm116 marisabelm116

02-09-2020

Answer:

Blue black

Explanation:

Because of the presence of starch. When iodine comes in contact with starch, it forms starch Iodide complex because iodine gets stuck in the beta coils in the structure of amylose of starch. The starch iodide complex gives blue-black colour.

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