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प्रश्न
Name two chemicals used to disinfect water.
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उत्तर
Two chemicals used to disinfect water are chlorine and ozone.
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संबंधित प्रश्न
Dried ______ is used as manure.
Drains get blocked by ______ and ______.
Describe the steps involved in getting clarified water from wastewater.
Explain how sludge is treated.
Explain the function of bar screens in a wastewater treatment plant.
Study the following statements about ozone:
- It is essential for breathing of living organisms.
- It is used to disinfect water.
- It absorbs ultraviolet rays.
- Its proportion in air is about 3%.
Which of these statements are correct?
State whether the following statement is True or False. In case a statement is false, write the correct statement.
Sewage is a solid waste which causes water pollution and soil pollution
State whether the following statement is True or False. In case a statement is false, write the correct statement.
Where underground sewerage systems and refuse disposal systems are not available, the high cost on-site sanitation system can be adopted
Three statements are provided here which define the terms –
- sludge
- sewage and
- wastewater.
Pick out the correct definition for each of these terms.
- The settled solids are removed in wastewater treatment with a scraper.
- Water from the kitchen is used for washing dishes.
- Wastewater is released from homes, industries, hospitals and other public buildings.
What is sludge?
