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Questions and Answers
What is the purpose of adding fluorine to water?
What is the purpose of adding fluorine to water?
- To adjust pH levels
- To kill pathogenic bacteria
- To remove permanent hardness
- To strengthen teeth and prevent decay (correct)
What is the process by which suspended particles settle to the bottom of a tank?
What is the process by which suspended particles settle to the bottom of a tank?
- Chlorination
- Flocculation
- Filtration
- Sedimentation (correct)
What is the process of removing ions from water using a cation exchange resin?
What is the process of removing ions from water using a cation exchange resin?
- Filtration
- Deionisation (correct)
- Ion exchange
- Distillation
What is the purpose of adding lime (Ca(OH)2) to water?
What is the purpose of adding lime (Ca(OH)2) to water?
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What is the process of coming together of small suspended solids in water?
What is the process of coming together of small suspended solids in water?
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What is the purpose of adding chlorine to water?
What is the purpose of adding chlorine to water?
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What is the primary difference between temporary and permanent hardness?
What is the primary difference between temporary and permanent hardness?
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Which of the following is NOT a method of removing suspended solids from water?
Which of the following is NOT a method of removing suspended solids from water?
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What is the purpose of adding Na+ ions in the ion exchange process?
What is the purpose of adding Na+ ions in the ion exchange process?
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Which of the following is an example of a permanent hardness-causing ion?
Which of the following is an example of a permanent hardness-causing ion?
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