Reduced at higher pH value of water
Unaffected by pH value of water
Increased at higher pH value of water
Highest at pH value equal to 7
Answer is Right!
Answer is Wrong!
The correct answer is: A. Reduced at higher pH value of water
Disinfection efficiency is reduced at higher pH values of water. This is because the disinfectants used in water treatment, such as chlorine and chloramine, are more effective at lower pH values. At higher pH values, these disinfectants are less able to penetrate the cell membranes of bacteria and other microorganisms, making them less effective at killing them.
Option B is incorrect because the pH value of water can have a significant impact on disinfection efficiency. Option C is incorrect because disinfectants are less effective at higher pH values. Option D is incorrect because disinfection efficiency is not highest at pH value equal to 7.