Question

Boojho took some grains of boiled rice in test tube ‘A’ and Paheli took boiled and chewed rice in test tube ‘B’. Both of them poured 1 – 2 drops of iodine solution into the test tube and observed the colour change. What colour change would they have observed? Give reasons for your answer.

Answer 1

In test tube ‘A’ – blue ***** colour because of presence of starch. In test tube ‘B’ – colour of iodine will not change because of digestion of starch into sugars.