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प्रश्न
In a filtration, plant water is filtered using layers of
पर्याय
sand and clay
clay and fine gravel
sand and fine gravel
sand, fine gravel and medium gravel
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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.
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संबंधित प्रश्न
Why do organisms need water?
Why is water very precious for all living being ?
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Name the gas produced when fossil fuel is burnt.
Give one word for the following statement :
The change of states of water from one form to another .
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.
Answer the following question.
Suggest three ways to conserve water.
Why is water considered a compound?
Explain why:
Air dissolved in water contains a higher proportion of oxygen.
Complete the statement by filling the blank with the correct word from the option.
Kerosene & water form a _______ mixture.
Give reason for the following:
The percentage of oxygen, in air dissolved in water, is higher than the percentage of oxygen in ordinary air.
What is meant by the term ‘oil spill’?
State the importance of water for all general uses.
37% of our brain‛s mass consists of water.
Condensation results in the formation of dew on grass.
State whether the following statement is True or False. If false, give the correct statement.
51% of the earth’s surface is covered with water
A mixture (x) in water contains suspended solids, organic impurities, inorganic impurities (a), nutrients (b), disease-causing bacteria and other microbes. Give names for (x), (a) and (b)?
Look at the figure.
Write down activities shown in this figure in which water is being used.
Write any two activities which require less than one bucket of water.
