Question

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.
                            Alum, tub, muslin cloth, gas stove, thread, pan and lid.

Answer 1

(i) Filtration using muslin cloth.
(ii) Swirl with alum and leave water undisturbed for some time.
(iii) Decantation.
(iv) Boil for 10 minutes in covered pan.
(v) Cool, filter and now it is fit for drinking.