Testing Food Components
Testing Food Components: Overview
This topic covers concepts, such as, Test for Fats, Test for Protein Using Copper Sulphate and Test for Starch Using Iodine etc.
Important Questions on Testing Food Components
How to make the iodine solution for the starch test.

Write the procedure of the starch test.

Write the experiment to carry out appropriate and simple tests to detect the presence of fats in the given food sample.

Write the procedure of tests for fats.

Copper sulphate is used to determine the presence of

Can you name us?
We are two chemicals needed to test a leaf for starch. - Iodine, _____.

Testing for carbohydrates in a food item is not easy.

Fill in the blank by choosing the correct word from the bracket.
Iodine turns starch to _____ (yellowish -white/ bluish-black) colour.

A green leaf turns bluish black when you add

The chemicals used to test the presence of proteins:

Iodine solution turns _____ blue black.

Give reasons.
A green leaf is bleached before carrying out a starch test.

Name of the chemical that name starts with I that is needed to test a leaf for starch.

Iodine solution turns _____ blue black.

Iodine on mixing with starch turns blue-black.

Potato is a good source of starch. If you add few drops of iodine solution on a few pieces of potato which colour will it show?

An iodine test is done to see the presence of _____ in plants.

Starch with iodine solution gives ________ colour.

Can you name us? Using the appropriate word from the bracket.
We are two chemicals needed to test a leaf for starch.
Iodine and _____. (Lime/Alcohol)

The given diagram illustrates the presence of
