Multiple choice

Which of the following chemicals is used for removal of suspended impurities by sedimentation?

  1. Washing soda

  2. Bleaching powder

  3. Alum

  4. Potassium permanganate

  5. Ozone

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

Sedimentation is the process settling down of impurities. This is done with the help of alum.