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

Paheli can follow the given steps to obtain water fit for drinking by using the materials given to her-​

i) Filter the muddy water with the help of a muslin cloth.​

ii) Tie the piece of alum with thread and sink in water for some time and then leave water undisturbed. ​

iii) After some time, the impurities will settle down and the water from the top can be decanted.​

iv) Boil the decanted water for about 10 minutes in a pan covered with a lid. Cool and filter the water again.​

The filtered water will be now fit for drinking.​