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Chemistry Hard CSS Uploaded: 04 Sep 2026

Which chemical is commonly used as a disinfectant and has the formula NaOCl?

  • A Sodium hypochlorite
  • B Sodium chloride
  • C Sodium chlorate
  • D Sodium chlorite
Correct Answer: Option A — Sodium hypochlorite
Explanation:
Sodium hypochlorite (NaOCl) is the active ingredient in household bleach, widely used as a disinfectant and bleaching agent due to its strong oxidizing properties that kill bacteria and remove stains.
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