Question

Cut the raw potato and apply 2 to 3 drops on it . shows blue black colour​

Answer 1

Answer:

Iodine

Explanation:

When few drops of iodine fall on starch substance, blue- black colour is observed. This is because of the formation of starch-iodine complex that gives blue colour. Thus, this property of Iodine is generally used to test the presence of starch.

Answer 2

Answer:

the answer is Iodine

Explanation:

When 2 to 3 drops of iodine fall on a raw potato and it turns blue- black color

It is observed as it has starch.

the formation of a starch-iodine complex that gives blue color.

Thus, it proves that a raw potato has the property of starch. Iodine is generally used to test the presence of starch.