Disinfection of water results in A. Removal of turbidity B. Removal of hardness C. Killing of disease bacteria D. Complete sterilisation

The correct answer is C. Killing of disease bacteria.

Disinfection is a process that kills or inactivates disease-causing microorganisms in water. It does not remove turbidity or hardness. Complete sterilization is not possible, as some microorganisms may be resistant to disinfection.

There are many different methods of disinfection, including chlorination, chloramination, ozone treatment, ultraviolet light

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