Conventional Water Treatment Methods

Description: This quiz will test your knowledge of conventional water treatment methods.
Number of Questions: 16
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Tags: water treatment conventional methods filtration disinfection
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Which of the following is not a conventional water treatment method?

  1. Filtration

  2. Disinfection

  3. Reverse osmosis

  4. Coagulation


Correct Option: C
Explanation:

Reverse osmosis is a more advanced water treatment method that is not typically used in conventional water treatment plants.

What is the purpose of filtration in water treatment?

  1. To remove suspended solids

  2. To kill bacteria

  3. To adjust the pH of the water

  4. To remove dissolved minerals


Correct Option: A
Explanation:

Filtration is used to remove suspended solids, such as dirt, sand, and other particles, from the water.

Which type of filter is commonly used in conventional water treatment plants?

  1. Sand filter

  2. Activated carbon filter

  3. Reverse osmosis filter

  4. Ultrafiltration filter


Correct Option: A
Explanation:

Sand filters are commonly used in conventional water treatment plants because they are effective at removing suspended solids and are relatively inexpensive to operate.

What is the purpose of disinfection in water treatment?

  1. To remove suspended solids

  2. To kill bacteria

  3. To adjust the pH of the water

  4. To remove dissolved minerals


Correct Option: B
Explanation:

Disinfection is used to kill bacteria and other microorganisms that can cause disease.

Which chemical is commonly used for disinfection in conventional water treatment plants?

  1. Chlorine

  2. Fluoride

  3. Ozone

  4. Ultraviolet light


Correct Option: A
Explanation:

Chlorine is commonly used for disinfection in conventional water treatment plants because it is effective at killing bacteria and is relatively inexpensive.

What is the purpose of coagulation in water treatment?

  1. To remove suspended solids

  2. To kill bacteria

  3. To adjust the pH of the water

  4. To cause suspended solids to clump together


Correct Option: D
Explanation:

Coagulation is used to cause suspended solids to clump together so that they can be more easily removed by filtration.

Which chemical is commonly used for coagulation in conventional water treatment plants?

  1. Alum

  2. Ferric chloride

  3. Sodium hypochlorite

  4. Potassium permanganate


Correct Option: A
Explanation:

Alum is commonly used for coagulation in conventional water treatment plants because it is effective at causing suspended solids to clump together and is relatively inexpensive.

What is the purpose of sedimentation in water treatment?

  1. To remove suspended solids

  2. To kill bacteria

  3. To adjust the pH of the water

  4. To allow coagulated solids to settle out of the water


Correct Option: D
Explanation:

Sedimentation is used to allow coagulated solids to settle out of the water so that they can be removed by filtration.

What is the purpose of pH adjustment in water treatment?

  1. To remove suspended solids

  2. To kill bacteria

  3. To adjust the acidity or basicity of the water

  4. To remove dissolved minerals


Correct Option: C
Explanation:

pH adjustment is used to adjust the acidity or basicity of the water to make it more suitable for drinking and to prevent corrosion of pipes.

Which chemical is commonly used for pH adjustment in conventional water treatment plants?

  1. Sodium hydroxide

  2. Sulfuric acid

  3. Sodium bicarbonate

  4. Calcium hydroxide


Correct Option: A
Explanation:

Sodium hydroxide is commonly used for pH adjustment in conventional water treatment plants because it is effective at raising the pH of the water and is relatively inexpensive.

What is the purpose of fluoridation in water treatment?

  1. To remove suspended solids

  2. To kill bacteria

  3. To adjust the pH of the water

  4. To prevent tooth decay


Correct Option: D
Explanation:

Fluoridation is used to add fluoride to the water to help prevent tooth decay.

Which chemical is commonly used for fluoridation in conventional water treatment plants?

  1. Sodium fluoride

  2. Potassium fluoride

  3. Hydrofluoric acid

  4. Calcium fluoride


Correct Option: A
Explanation:

Sodium fluoride is commonly used for fluoridation in conventional water treatment plants because it is effective at preventing tooth decay and is relatively inexpensive.

What is the purpose of corrosion control in water treatment?

  1. To remove suspended solids

  2. To kill bacteria

  3. To adjust the pH of the water

  4. To prevent corrosion of pipes


Correct Option: D
Explanation:

Corrosion control is used to prevent corrosion of pipes and other infrastructure that comes into contact with the water.

Which chemical is commonly used for corrosion control in conventional water treatment plants?

  1. Sodium hydroxide

  2. Sulfuric acid

  3. Sodium bicarbonate

  4. Calcium hydroxide


Correct Option: C
Explanation:

Sodium bicarbonate is commonly used for corrosion control in conventional water treatment plants because it is effective at raising the pH of the water and preventing corrosion.

What is the purpose of taste and odor control in water treatment?

  1. To remove suspended solids

  2. To kill bacteria

  3. To adjust the pH of the water

  4. To improve the taste and odor of the water


Correct Option: D
Explanation:

Taste and odor control is used to improve the taste and odor of the water so that it is more palatable to consumers.

Which chemical is commonly used for taste and odor control in conventional water treatment plants?

  1. Activated carbon

  2. Potassium permanganate

  3. Sodium hypochlorite

  4. Ozone


Correct Option: A
Explanation:

Activated carbon is commonly used for taste and odor control in conventional water treatment plants because it is effective at removing organic compounds that can cause bad taste and odor.

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