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

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

Accepted Answer

In test tube A colour of iodine changes to blue black because of reaction of iodine with starch In testtube B colour will not change because salivary amylase acts on starch while chewing reducing it to simpler sugars

NCERT Exemplar Solutions Class 7 Science Solutions for Nutrition in Animals - Exercise in Chapter 2 - Nutrition in Animals