Advertisements
Advertisements
प्रश्न
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.
पर्याय
True
False
उत्तर
False
Explanation:
The given statement is False. The low-cost on-site sanitation systems can be adopted when the underground sewerage systems and refuse disposal systems are unavailable.
APPEARS IN
संबंधित प्रश्न
Drains get blocked by ______ and ______.
Describe the steps involved in getting clarified water from wastewater.
Name two chemicals used to disinfect water.
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?
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.
Used water is wastewater
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.
What is sludge?