What is the mass percentage of sodium hypochlorite typically present in a commercial bleaching solution?

Correct option is A

The correct answer is (a) 3.62%
Explanation:
• Commercial bleach contains dilute sodium hypochlorite.
• Typical household bleach has around 3–5% NaOCl.
• 3.62% matches standard bleaching formulations.
• Higher concentrations are industrial-grade.
• Hence, 3.62% is correct.
Information Booster:
• Sodium hypochlorite is a strong oxidising agent.
• Used for disinfection and whitening.
Additional Knowledge (Incorrect Options):
• 5.46% / 10.85% – Higher than household bleach.
• 2.57% – Lower than standard concentration.