AI-generated practice question — model-generated for extra practice, not a previous-year CBSE board question.
The chemical formula of bleaching powder is CaOCl₂ (Calcium oxychloride / Calcium hypochlorite and chloride).
Bleaching powder is Ca(OCl)Cl, commonly written as CaOCl₂. This is a standard factual recall question from Chapter 2 (Acids, Bases and Salts). Note that the source passages provided do not directly mention bleaching powder, but this formula is part of the prescribed CBSE Class 10 Science syllabus (NCERT Chapter 2). Examiners expect the correct formula; writing the name alone will not fetch the mark.