Question

Boojho took some grains of boiled rice in test tube ‘A’ and Paheli took boiled and chewed rice in test tube ‘S’. 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

Answer:

Tube A and Tube B turns dark blue colour. Explanation: The presence of starch turns the solution in the test tube into blue colour in the boiled rice.

Answer 2

Answer:

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