Question

6. Which of the these react with
iodine solution and turn iodine
solution bluish-black?
(1 Point)
Sugar solution
Salt solution
Rice water
O All of these

Answer 1

Answer:

Amylose in starch is the main factor for colour formation as iodine comes in contact with beta coils structure of amylose and gives blue - black colour with iodine. Thus, the reaction of iodine with rice water indicates that rice water contains starch. So, the correct answer is option D – Starch.

Explanation:

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