Question

Foods rich in starch turnsin colour, when treated with iodine solution.

• A. orange
• B. pink
• C. green
• D. blue-black

Answer 1

The correct option is D blue-black

Starch is a type of carbohydrate. The presence of carbohydrates in food can be tested by adding few drops of dilute iodine solution. The formation of blue-black colour confirms the presence of carbohydrates in the food item. Carbohydrate-rich foods include potato, rice, bread and fruits like banana, grapes, etc.