Advertisements
Advertisements
प्रश्न
In a filtration, plant water is filtered using layers of
विकल्प
sand and clay
clay and fine gravel
sand and fine gravel
sand, fine gravel and medium gravel
Advertisements
उत्तर
sand, fine gravel and medium gravel
Explanation:
In wastewater treatment, wastewater is allowed to enter a grit and sand removal tank. Here, the speed of wastewater is reduced in order to allow sand, grit and pebbles to settle down.
APPEARS IN
संबंधित प्रश्न
Name the gas produced when fossil fuel is burnt.
What are the main causes of water pollution ? How can it be controlled ?
Give one word for the following statement:
The gaseous form of water found in air .
What is the smallest particle of water ? Describe it’s structure.
How is aquatic life benefited by the fact that water has maximum density at 4oC?
Explain why rivers and lakes do not freeze easily.
Why is it said that seawater is useful even though it is not potable?
The water in a lake is called ground water.
What is meant by the term ‘oil spill’?
State any two sources of water pollution.
State the causes of ‘eutrophication’.
What is meant by the term ‘offshore drilling’. State the main environmental effects of offshore drilling.
If, at some place, it did not rain for a very long period of time, what would be its effect on the life of the people there?
Unscramble the words and fill in the blanks.
- ondencsaonti ______
- vaeionorpat ______
- ecippitatrino ______
________ of water is in oceans and seas.
Rivers from land, add minerals to seawater. Discuss how?
What is the source of water in the following?
Wells
Why should we not throw used tea leaves into sink?
In which one of the following state's water is present on Earth?
