The destruction of water-borne pathogens is termed as disinfection of water. Which of the following is a water disinfectant ?
Correct answer: A. Chlorine
- A. Chlorine
- B. Alkalis
- C. Benzene hexachloride
- D. Alkyl benzene sulphonate (ABS)
Explanation
Chlorine is widely used to disinfect water because it forms hypochlorous acid, a strong antimicrobial agent that destroys many water-borne pathogens. Alkalis mainly adjust pH, while ABS is a detergent rather than a disinfectant.
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