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Water Sources and Treatment in India

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Questions and Answers

What percentage of households in India rely on groundwater as their source of drinking water?

Around 60-70% (correct)
Less than 50%
More than 80%
Almost all households

What is the primary objective of surface water treatment?

To remove suspended material and eliminate pathogenic organisms (correct)
To add taste and odor to the water
To reduce the pH level of the water
To remove dissolved solids

What is the purpose of the Rapid Mixing step in water treatment?

To filter out large particles
To add chlorine to the water
To remove suspended solids
To mix lime and soda into the water (correct)

What is the purpose of the Filtration step in water treatment?

To remove suspended solids (B) Signup and view all the answers

What is the purpose of the Disinfection step in water treatment?

To add disinfectant to the water (B) Signup and view all the answers

Why do Water Treatment Plants (WTPs) need to remove high levels of organic content from Indian rivers?

Because of human activities (B) Signup and view all the answers

What is the primary goal of coagulation and flocculation in water treatment?

To alter the surface charge of particles to make them settle by gravity (B) Signup and view all the answers

What type of particles are commonly found in water and repel each other due to their negative charge?

Colloids (A) Signup and view all the answers

What is a key characteristic of a suitable coagulant?

It is insoluble in neutral pH range (B) Signup and view all the answers

What is the purpose of sedimentation in water treatment?

To remove colloids and other suspended particles (D) Signup and view all the answers

What is the result of the combination of coagulation and flocculation in water treatment?

Particulates stick together to form larger flocs (C) Signup and view all the answers

What is the role of paddle mixers in the coagulation and flocculation process?

To mix the coagulant with the water (B) Signup and view all the answers

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