Advertisements
Advertisements
प्रश्न
Animal waste, oil and urea are some of the organic impurities present in sewage. Name two more organic impurities present in sewage.
Advertisements
उत्तर
Pesticides and fruits and vegetable wastes are organic impurities present in sewage.
APPEARS IN
संबंधित प्रश्न
Why do organisms need water?
State the importance of water cycle in nature.
Why is water very precious for all living being ?
Give balanced chemical equation for the reaction of water with Sodium oxide.
What are the main causes of water pollution ? How can it be controlled ?
Describe the water-cycle in nature.
How is aquatic life benefited by the fact that water has maximum density at 4oC?
Explain why:
Table salts become sticky on exposure to humid air during the rainy season.
State what is potable water. Give its qualities or characteristics which make it fit for human consumption.
Give the importance of dissolved minerals & salts.
Give a balanced equation for the following conversion:
Calcium sulphate in permanent hard water to calcium carbonate using sodium carbonate.
Name a deliquescent substance’.
State the causes of ‘eutrophication’.
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?
Total earth’s surface covered by water is
On which of the following day is World Water Day observed?
A jumbled word is given here. Write the correct form of the word.
QUIFERA
From where do the following usually get water? In which form is water present in them?
Aquifer
Which of the following is waste water?
Look at the figure.
Write down activities shown in this figure in which water is being used.
