6. . When a few drops of iodine solution are added to rice water, the solution turns blue- black in colour. This indicates that rice water contains:

Question

(a) fats
(b) complex proteins
(c) starch
(d) simple proteins

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swatiqna 3 years 2021-12-17T13:29:41+00:00 1 Answer 5 views Enlightened 0

Answer ( 1 )

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    2021-12-17T13:31:25+00:00

    Answer.(c) starch 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.

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