Question

Given blue-black colour when iodine solution is add Gives purple colour when two drops of Copper sulphate solution and lo [drops of coustic soda is added to it oil stains are seen when xubbed on paper Ruw potato 2-V Dried coconut peanuts Milk Gram flour Boiled rice​

Answer 1

Answer:

Iodine test is used to determine the presence of starch in food items. If iodine is added to any food item and it causes the food item to turn to a blue-black colour. This indicates the presence of the nutrient called starch (carbohydrate).

Explanation: