The correct answer is A. Disinfectant.
Bleaching powder is a chemical compound with the formula CaOCl2. It is a white, odorless powder that is used as a bleaching agent, disinfectant, and deodorizer. Bleaching powder is made by passing chlorine gas through a suspension of calcium hydroxide. The chlorine reacts with the calcium hydroxide to form calcium hypochlorite, which is then hydrolyzed to form hypochlorous acid and calcium chloride.
Hypochlorous acid is a strong oxidizing agent that kills bacteria and other microorganisms. It is also effective against viruses and fungi. Bleaching powder is used to disinfect drinking water, swimming pools, and other water supplies. It is also used to disinfect surfaces in hospitals and other healthcare facilities.
Antibiotics are drugs that are used to treat bacterial infections. They work by killing or inhibiting the growth of bacteria. Antibiotics are not effective against viruses or fungi.
Antiseptics are substances that are used to prevent the growth of microorganisms on the skin or other surfaces. They are not as effective as antibiotics at killing bacteria, but they are safe to use on living tissue.
Coagulants
are substances that are used to cause the precipitation of suspended particles in a liquid. They are used in drinking water treatment to remove suspended solids and turbidity.In conclusion, bleaching powder is used in drinking water as a
disinfectant. It is a strong oxidizing agent that kills bacteria and other microorganisms. It is also effective against viruses and fungi.