The disinfectant sodium hypochlorite is commonly known as:

• A. Bleach
• B. Ammonia
• C. Hydrogen peroxide
• D. Vinegar

Answer: (A)

Sodium hypochlorite is the active ingredient in household bleach, a chlorine-based disinfectant. In water it forms hypochlorous acid, which acts quickly to inactivate a wide range of microbes by oxidizing essential components in their cells. That’s why it’s widely used for sanitizing surfaces and tools in nail salons when used at proper dilutions and contact times. The other substances listed correspond to different chemicals: ammonia is a basic cleaner, hydrogen peroxide is a separate oxidizer, and vinegar is acetic acid with milder antimicrobial properties.