Question

:
Starch gives following colour with iodine solution:
(a) red colour
(b) Blue colour
(c) Yellow colour
(d) Green colour

Answer 1

Answer:

(c)Yellow colour

Explanation:

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Answer 2

Answer:

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Explanation:

Amylose in starch is responsible for the formation of a deep blue color in the presence of iodine. The iodine molecule slips inside of the amylose coil. Iodine - KI Reagent: Iodine is not very soluble in water, therefore the iodine reagent is made by dissolving iodine in water in the presence of potassium iodide. This makes a linear triiodide ion complex with is soluble that slips into the coil of the starch causing an intense blue-black color.