Understanding Water Turbidity and Flocculation

What is the main reason some people in the world have no choice but to drink turbid water?

• Lack of access to clean water

• Preference for turbid water

• Cost of clean water

• Cultural beliefs

What are the two main types of particles found in turbid water?

• Solid and liquid

• Organic and inorganic

• Heavy and light

• Visible and invisible

What is the term used to describe the cloudiness caused by colloids in water?

• Purity

• Density

• Turbidity

• Clarity

How does increased turbidity in drinking water affect health?

• It makes water taste better

• It reduces the risk of disease

• It increases the risk of disease

• It has no effect on health

Which of the following diseases can be caused by drinking turbid water?

• Cholera

• Diabetes

• Arthritis

• Asthma

What is the process called that aggregates colloids into larger particles?

• Filtration

• Flocculation

• Distillation

• Evaporation

What is added to water to initiate the flocculation process?

• Salt

• Flocculant

• Sugar

• Acid

What happens to colloids when a flocculant is added?

• They become invisible

• They dissolve

• They evaporate

• They aggregate

What charge do most colloids have on their surfaces?

• Positive

• Variable

• Neutral

• Negative

Which country is mentioned as using flocculation to produce drinking water from sewer water?

• Brazil

• Singapore

• India

• Canada