Question

Identify the components present in the material based on the following results or

conclusions.

(a) Cut the raw potato and apply two to three drops on it - shows blue black

colour.

(b) Wrap the ground nut seed in paper and crush it carefully, oily patch can be

seen on paper.​

Answer 1

Answer:

(a) carbohydrate is present in the material

(b)Fat is present in the material

Answer 2

Answer:

Answer:

a) Carbohydrate is the component present.

b) Fats is the component present.

Explanation:

a) The solution added to the cut potato is iodine solution. This is a method for testing the presence of starch/ carbohydrate in any food item.

Potatoes are vegetables which are really high in carbohydrates. Thus, they give blue black colour when odine solition is added.

b) The given method of crushing a food item in paper is the method for testing the presence of fats in items.

All kinds of nuts have high amount of fats which can be seen to leave an oily patch when crushed in a paper.