Name a practical use for chlorine.

Name a practical use for chlorine.

• A. Pool Cleaner
• B. Metal Polish
• C. Fertilizer
• D. Detergent

Answer: (A)

Chlorine is used as a disinfectant and oxidizer to keep water clean. In swimming pools, it forms hypochlorous acid in the water, which kills bacteria and viruses and oxidizes organic wastes like sweat and oils. This sanitizing action prevents algae growth and helps water stay clear and safe for swimmers. Among the options, the practical use that matches this cleansing effect is keeping a pool clean. The other choices don’t align with chlorine’s main role: metal polish isn’t something chlorine does (it can actually corrode metals), fertilizer isn’t a primary use of chlorine, and detergents may use chlorine-based bleaches but the core benefit here is sanitation of pool water.

Chlorine is used as a disinfectant and oxidizer to keep water clean. In swimming pools, it forms hypochlorous acid in the water, which kills bacteria and viruses and oxidizes organic wastes like sweat and oils. This sanitizing action prevents algae growth and helps water stay clear and safe for swimmers. Among the options, the practical use that matches this cleansing effect is keeping a pool clean. The other choices don’t align with chlorine’s main role: metal polish isn’t something chlorine does (it can actually corrode metals), fertilizer isn’t a primary use of chlorine, and detergents may use chlorine-based bleaches but the core benefit here is sanitation of pool water.