Question

Describe two tests to detect the presence of starch and sugar in our food​

Answer 1

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Take small quantity of the food items to be tested. Put 2-3 drops of iodine solution on it. Observe the colour of the food item. Blue-black colour indicates the presence of starch in the tested food item.

Benedict's solution is used to test for simple sugars, such as glucose. It is a clear blue solution of sodium and copper salts. In the presence of simple sugars, the blue solution changes color to green, yellow, and brick-red, depending on the amount of sugar.