The water level in a closed container remains constant because the water cannot escape. In a closed container, no water can evaporate or be added from outside. The amount of water stays the same, so the water level does not change. This is because the container is sealed, trapping the water inside.
This question related to Chapter 8 Science Curiosity Class 6th NCERT.
From the Chapter 8. A Journey through States of Water.
Give answer according to your understanding.
No evaporation occurs.
Explanation: In a closed container, water vapor cannot escape, so it reaches equilibrium with the liquid.
For more please visit here:
https://www.tiwariacademy.com/ncert-solutions-class-6-science-curiosity-chapter-8/