Multiple choice

An oily patch on paper shows the presence of which of the following components in the food items?

  1. water

  2. starch

  3. proteins

  4. fat

Reveal answer Fill a bubble to check yourself
D Correct answer
Explanation

The presence of any nutrient can be tested and confirmed by particular tests, e.g. presence of proteins can be tested by using copper sulphate and caustic soda. When a food product is kept on a paper, an oily patch on the paper confirms the presence of fat.