Question

how to test presence of starch in food
Warning:-ans should be in ur words​

Answer 1

Explanation:

The presence of starch in a food item can be tested by using a dilute iodine solution.This test is based on the fact that iodine produces a blue black colour on combination with starch.So,a food item which gives blue black colour on adding a few drops of dilute iodine solution will contain starch.

To test the presence of starch:-

Cut a potato into two pieces with a knife.Add 2 or 3 drops of dilute iodine solution on the freshly cut surface of the potato piece with the help of a dropper.A blue black colour appears on the cut surface of potato.The appearance of blue black shows that potato contains starch