Question

Priya took some grains of boiled rice in a test tube 'A' and Anu took boiled and chewed rice in test time 'B' both poured 1-2 drops of iodine solution and observed the colour change what colour change would they have observed .Give reason for your answer

Answer 1

Answer:

Hey mate,

Your answer is as follows:

Tube A and Tube B turns dark blue colour.

The presence of starch turns the solution in the test tube into blue colour in the boiled rice.

After adding iodine to it the colour never changes as the activity of salivary amylase on starch.

The conversion of starch present in salivary amylase into maltose gives a negative reaction.

Thus, the colour change is prominently noted. In other reactions, this colour difference is not seen much.

Explanation:

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