Advertisements
Advertisements
Question
To clean the spectacles, people often breathe out on glasses to make them wet. Explain why do the glasses become wet.
Advertisements
Solution
When we breathe out, the hot air comes out from our mouth which gets condensed and changed into tiny water droplets, and glasses become wet.
APPEARS IN
RELATED QUESTIONS
The process of changing water into its vapour is called ______.
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?
The boiling point of water is ______
Give a reason for the following.
Alum is added to water in sedimentation tanks.
Give a reason for the following.
Ice floats on water.
______ water contains 0.05% to 1% of salts.
The molecular formula of water is ______.
Every year _______ is observed as the world water day.
______ is a transparent, tasteless, odourless, chemical substance.
What is the composition of water?
