Question

Chew one spoon boiled rice for 5-6 minutes in your mouth. Take these chewed rice in a test tube and add
to drops of iodine solution in it. Explain the change in the colour of iodine solution?​

Answer 1

Answer:

it can change into blue black colour because boiled rice can contain starch

Answer 2

Answer:

There will be mild blue-black color change that take place in the iodine solution of test tube.

Explanation:

Boiled rice has high starch content in it which gives blue-black color in the iodine solution. When one chew boiled rice for 5 to 6 minutes in mouth, the saliva present in salivary glands mix with the rice. The enzyme amylase which is an enzyme that present in the saliva digests the starch and breaks it into the sugars.

The saliva rice must have started to break the starch into the sugars so there will be only mild blue-black color in the test tube.

Thus, the correct answer is -there will be mild blue-black color change take place in the iodine solution of the test tube.