Question

If any food items gives blue and black colour with iodine then which nutrient in present in the food​

Answer 1

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, it indicates the presence of the nutrient called starch (carbohydrate).

Answer 2

Answer:

if the food turns blue or black means it has starch.

Explanation:

This can be found out by dropping 2-3 drops of iodine solution