Different strokes with starch
Jyotsna Vijapurkar, Aakanksha Sawant, Swapnaja Patil
The starch test is an easy-to-do test, commonly included in school textbooks (generally from grades 6 through 9). All one has to do is add a few drops of iodine to test if something contains starch; if it does, it turns blue. This test is usually done on potatoes or rice or cereal flours.