Advertisements
Advertisements
प्रश्न
Take out the cooled bottle of water from the refrigerator and keep it on a table. After some time you notice a puddle of water around it. Why?
उत्तर
The cooled surface of the bottle cools the air around it and the water vapour of the air condenses. So after some time, a puddle of water can be noticed around the bottle.
APPEARS IN
संबंधित प्रश्न
The process of changing water into its vapour is called ______.
______ is built on rivers to regulate water flow and distribute water.
Give a reason for the following.
Alum is added to water in sedimentation tanks.
______ water contains 0.05% to 1% of salts.
The molecular formula of water is ______.
Every year _______ is observed as the world water day.
Water freeze at 100° Celsius at normal pressure.
Analogy:
Contain more than 3% of salt: ______:: upto 3% of salt dissolved: Brackish water.
______ is a transparent, tasteless, odourless, chemical substance.
The chemical name of water is ______.
