Question

we always need to store liquids in container . why?

Answer 1

We need to store water in container because water is a fluid and so it cannot rest at one place. Thus it needs to be store in container or else it will flow.

Answer 2

Y'all This is true that it is important to store water in any container because liquids do not have any definite shape and distinct boundary. If we won't store it in any container then it will flows and after sometime it evaporates. This also reduce stress amount of water. This, we store it in a container as it takes its shape and boundary and exerts pressure on its bottom and it's walls.
Hope it will help u.