Sedimentation is followed by……..in water -supply units . (chlorination/filtration).

Sedimentation unit of ribosome is

Chlorination of water is done

Water supply in the plant is due to

Which of the following lack blood supply ?

Assertion : Secondary treatement of sewage is also called biological treatment while primary treatment is called physical treatment. Reason : Primary sewage treatment depends only upon sedimentation properties of materials present in sewage and filtration.

Name the steps involved in the purification of drinking water supplied in cities and towns.

Kerosene and water can be separated by filtration.

Which of the following is used in the prepration of chlorine ?

Draw a simple diagram to show the sedimentation and filtration of water - supply units .

Water of often treated with chlorine to