Water - Class 6 Chemistry - Extra Questions

What is rainwater harvesting? Describe the method of rainwater harvesting.

Rainwater harvesting is the collection of rainwater and storing it for future use. In this system rainwater in collected form the rooftops by means of pipes into storage tank for later use. 
Methods of Rainwater Harvesting : 
1. Rooftop rainwater harvesting. In this system, the rainwater from the rooftop is collected in a storage tank, through pipes.
2. Another method, a big pit is dug near house for collecting rainwater. This pit is filled with different layers of bricks, coarse gravels and sand or granite pieces.


What causes the violence associated with torrential rain?

Torrential rains release the latent heat of condensation suddenly this causes violence associated with torrential rain.


Mention any three ways by which potable water can be contaminated.

Potable water can be contaminated in the following three ways:
  • Urination and defecation near water bodies such as ponds, lakes, and rivers.
  • Sewage disposed of improperly.
  • Contamination of water bodies due to animal washings and wastes from poultries and dairies.


Define rainwater harvesting.

The rainwater can be used to recharge the groundwater is known as rainwater harvesting. The rainfall is the main source of water, so we should not waste the rainwater.


What is rain water harvesting? Describe the method of rain water harvesting? 

Rainwater harvesting is the collection of rainwater and storing it for future use. In this system, rainwater is collected from the rooftops by means of pipes into the storage tank for later use 
Methods of rainwater harvesting: 
$$1.$$ Rooftop rainwater harvesting: In this system, the rainwater from the rooftop is collected in a storage tank, through pipes 
$$2.$$ Another method, a big pit is dug near the house for collecting rainwater This pit is filled with different layers of bricks, coarse gravels, and sand or granite pieces this way water gets soaked into the earth and underground water level in the earth will get charge up.


Class 6 Chemistry Extra Questions