Water Purification
Trending Questions
Why is aeration important in hydroponics?
Clarified water is then passed into aeration tanks, where it is agitated or sprayed. Air may also be bubbled through to increase oxygen levels in the water. Why is this step carried out in wastewater treatment plants?
Bad odour
Dissolved salt
Small suspended solids
Bacteria
In a filtration plant water is filtered using layers of.
Sand.
Oil.
Sand and clay.
Sand, fine gravel and medium gravel.
Which of the following substances are used in water purification for a small quantity of water?
Sand
Gravel
Charcoal
Alum
Analyse the given diagram below and choose the correct option which shows the correct setup for the conventional method of purification of water.
A- Sand, B- Charcoal, C- Gravel
A- Sand, B- Gravel, C- Charcoal
A- Gravel, B- Charcoal, C- Sand
A- Gravel, B- Sand, C- Charcoal
- Bad odour
- Dissolved salt
- Small suspended solids
- Bacteria
- Screening
- Aeration
- Segregation
- Chlorination
Sedimentation of solid matter occurs during which step of water treatment?
Coagulation
Clariflocculation
Aeration
Chlorination
What kind of cleaning agent is used for heavily soiled areas?
Alkaline cleaning agent
Acidic cleaning agent
Solvent type cleaning agent
Buffer cleaning agent
Which of the following is/are the uses of water?
Cleaning
Coolant
Solvent
Agriculture
- Filtration
- Chlorination
- Screening
- Biological → chemical → physical
- Chemical → biological → physical
- Physical → biological → chemical
- Biological → physical → chemical
- Filtration
- Chlorination
- Screening
Clarified water is then passed into aeration tanks, where it is agitated or sprayed. Air may also be bubbled through to increase oxygen levels in the water. Why is this step carried out in the wastewater treatment plants?
Bad odour
Dissolved salt
Small suspended solids
Bacteria
What happens during the aeration step of water treatment?
Amount of oxygen decreases
Amount of oxygen increases
Amount of chlorine decreases
Amount of chlorine increases
Which ray is used in water purifiers?
Gamma ray
Alpha ray
Visible Ray
UV ray
Which of the following is used for the purification of water?
it is necessary for existence of life on earth
it is essential for healthy growth of crops
it is needed for everyday activities
all of these
What is the process for removal of contaminants from wastewater?
Sewage treatment
Water treatment
Filtration
Chlorination