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प्रश्न
Drains get blocked by ______ and ______.
उत्तर
Drains get blocked by plastic bags and cooking oil.
Explanation:
- Grease from cooking can solidify and adhere to the pipes, while hair accumulates and forms clumps.
- plastic bags Both obstruct the flow of water and cause blockages in the drainage system.
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संबंधित प्रश्न
Dried ______ is used as manure.
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?
Which of the following is/are products of wastewater treatment?
The system of a network of pipes used for taking away wastewater from homes or public buildings to the treatment plant is known as
Which of the following is not a source of wastewater?
State whether the following statement is True or False. In case a statement is false, write the correct statement.
Sewage is a solid waste that 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.
Wastewater could be reused.
Given below is a jumbled sequence of the processes involved in a wastewater treatment plant. Arrange them in their correct sequence.
(a) Sludge is scraped out and the skimmer removes the floating grease.
(b) Water is made to settle in a large tank with a slope in the middle.
(c) Large objects like plastic bags are removed by passing wastewater through bar screens.
(d) Sand, grit and pebbles are made to settle by decreasing the speed of incoming wastewater.
(e) Wastewater enters a grit and sand removal tank.
Three statements are provided here which define the terms
(a) sludge
(b) sewage and
(c) wastewater.
Pick out the correct definition for each of these terms.
(a) The settled solids are removed in wastewater treatment with a scraper.
(b) Water from the kitchen is used for washing dishes.
(c) Wastewater is released from homes, industries, hospitals and other public buildings.
