Paheli was feeling thirsty but there was only a pot of water at home which was muddy and unfit for drinking. How do you think Paheli would have made this water fit for drinking if the following materials were available to her.
Filtration using the muslin cloth.
Swirl with alum and leave water undisturbed for some time.
The clear liquid above the impurities is poured in another container. This process is called as Decantation.
Boil for 10 minutes in covered pan.
Cool, filter and now it is fit for drinking