Q. What is reverse osmosis primarily used for in water treatment?
-
A.
Disinfection
-
B.
Desalination
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C.
Fluoridation
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D.
pH adjustment
Solution
Reverse osmosis is primarily used for desalination, removing salts and impurities from water.
Correct Answer:
B
— Desalination
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Q. What is the main goal of water treatment?
-
A.
To make water taste better
-
B.
To ensure water is safe for consumption
-
C.
To increase water supply
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D.
To reduce water temperature
Solution
The main goal of water treatment is to ensure that water is safe for human consumption.
Correct Answer:
B
— To ensure water is safe for consumption
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Q. What is the primary purpose of chlorination in water treatment?
-
A.
To remove heavy metals
-
B.
To kill bacteria and viruses
-
C.
To improve taste and odor
-
D.
To filter out sediments
Solution
Chlorination is primarily used to disinfect water by killing harmful microorganisms.
Correct Answer:
B
— To kill bacteria and viruses
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Q. What is the purpose of sedimentation in water treatment?
-
A.
To kill bacteria
-
B.
To remove dissolved gases
-
C.
To allow heavier particles to settle
-
D.
To add minerals
Solution
Sedimentation allows heavier particles to settle at the bottom of a tank, clarifying the water.
Correct Answer:
C
— To allow heavier particles to settle
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Q. What is the role of activated carbon in water treatment?
-
A.
To add minerals
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B.
To remove chlorine
-
C.
To adsorb organic compounds
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D.
To increase pH
Solution
Activated carbon is used to adsorb organic compounds and improve water quality.
Correct Answer:
C
— To adsorb organic compounds
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Q. Which chemical is commonly added to drinking water to prevent tooth decay?
-
A.
Chlorine
-
B.
Fluoride
-
C.
Sodium
-
D.
Calcium
Solution
Fluoride is commonly added to drinking water to help prevent tooth decay.
Correct Answer:
B
— Fluoride
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Q. Which method is effective for removing pathogens from water?
-
A.
Boiling
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B.
Fluoridation
-
C.
Chlorination
-
D.
Both boiling and chlorination
Solution
Both boiling and chlorination are effective methods for removing pathogens from water.
Correct Answer:
D
— Both boiling and chlorination
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Q. Which of the following is a common indicator of water quality?
-
A.
pH level
-
B.
Color
-
C.
Temperature
-
D.
All of the above
Solution
pH level, color, and temperature are all common indicators of water quality.
Correct Answer:
D
— All of the above
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Q. Which process is commonly used to remove suspended solids from water?
-
A.
Filtration
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B.
Chlorination
-
C.
Fluoridation
-
D.
Sedimentation
Solution
Filtration is the process used to remove suspended solids from water.
Correct Answer:
A
— Filtration
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Q. Which type of filtration uses a membrane to separate contaminants from water?
-
A.
Sand filtration
-
B.
Activated carbon filtration
-
C.
Microfiltration
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D.
Chlorination
Solution
Microfiltration uses a membrane to separate contaminants from water.
Correct Answer:
C
— Microfiltration
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