Question:

Disinfection of water is done by ____

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Water treatment processes: \[ \boxed{ \begin{aligned} \text{Coagulation} &\rightarrow \text{Alum}\\ \text{Filtration} &\rightarrow \text{Removal of suspended solids}\\ \text{Disinfection} &\rightarrow \text{Chlorination} \end{aligned} } \]
Updated On: Jul 23, 2026
  • Passing chlorine
  • Heating and cooling
  • Filtration
  • Alum
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The Correct Option is A

Solution and Explanation

Step 1: Recall the purpose of disinfection. Disinfection destroys disease-causing microorganisms present in treated water.

Step 2: Identify the common method. The most widely used method of water disinfection is chlorination, i.e., passing chlorine into water. Hence, \[ \boxed{\text{Passing chlorine}} \] is the correct answer. Therefore, \[ \boxed{(A)} \] is the correct answer.
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