MEDIUM
7th CBSE
IMPORTANT
Earn 100
Tertiary treatment is a process. ( physical/chemical )
50% studentsanswered this correctly
Important Questions on Waste Water Management Plants
MEDIUM
7th CBSE
IMPORTANT
_____ consists of human excreta and other organic materials. (Water/ Sewage)
MEDIUM
7th CBSE
IMPORTANT
Match the items in column A with the items in column B
| Column A | Column B | ||
|---|---|---|---|
| 1 | Tertiary treatment | a | Mechanical process |
| 2 | Sewers | b | Biological process |
| 3 | Waste water | c | Scum |
| 4 | Secondary treatment | d | Sewage |
| 5 | Primary treatment | e | Pipes carrying sewage |
| f | Chemical process |
MEDIUM
7th CBSE
IMPORTANT
Primary treatment of waste water is a mechanical process.
MEDIUM
7th CBSE
IMPORTANT
Scum is removed with a skimmer.
MEDIUM
7th CBSE
IMPORTANT
Septic tank is an example of on-site sewage disposal system.
MEDIUM
7th CBSE
IMPORTANT
Aeration of clarified water kills disease-causing microbes.
EASY
7th CBSE
IMPORTANT
Sewer pipes are made up of cast iron.
MEDIUM
7th CBSE
IMPORTANT
Solve the following crossword puzzle:
Across
2. Impurities present in wastewater
3. Wastewater
4. The leakage of petroleum oil into the sea.
Down
1. This fuel is produced by anaerobic fermentation of sludge
2. It is a waterborne disease
