Advertisements
Advertisements
प्रश्न
Give a reason for the following.
Alum is added to water in sedimentation tanks.
Advertisements
उत्तर
Reason:
- Chemical substance potash alum is added to water to speed up the process of sedimentation.
- This process is called loading.
- The particles of potash alum combine with the suspended impurities and make them settle down at a faster rate.
APPEARS IN
संबंधित प्रश्न
______ is built on rivers to regulate water flow and distribute water.
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?
To clean the spectacles, people often breathe out on glasses to make them wet. Explain why do the glasses become wet.
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.
Water is a non-transparent chemical.
The chemical name of water is ______.
