Mr.John is working in `IICT` as a scientist. During the synthesis of a drug in the laboratory were associated with the drug. Mr. John dissolved the drug obtained in the solvant and added charcoal to it. This was than filtered off which on evaporation gave back the pure drug. Then the assistant asked Mr.John the following question ' what is the role of charcoal'? What was Mr.John's answer ?

Explanation

Charcoal has good adsorbing properties. When charcoal is added, it adsorbs the impurities, and when filtered , the impurities are separated from charcoal.