Multiple choice

Which of the following methods is not used for separation of substances?

  1. Winnowing

  2. Transfusion

  3. Evaporation

  4. Threshing

  5. Sieving

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

 Blood transfusions are used to replace blood lost during surgery or a serious injury. It means that blood is mixed with the blood in the body. Therefore it is a method of mixing and not separating substances.