alleryBleaching powder used in disinfection of water has the formula:
ACaO
BCa(OH)₂
CCaOCl₂
DCaCO₃
Answer & Solution
Correct answer: C. CaOCl₂
1. Bleaching powder, CaOCl₂ (calcium oxychloride / calcium hypochlorite mix).
2. Prepared by passing Cl₂ over dry slaked lime: Ca(OH)₂ + Cl₂ → CaOCl₂ + H₂O.
3. Used to bleach cotton/linen and as a swimming-pool / water-supply disinfectant.
_Source: syllabus Science Ch 2 §2.4.1 Bleaching Powder_
Keep practising Calorimetry
Browse all Calorimetry questions for ICSE Class 10, or explore more Physics topics.
Related questions
True or false about electricityBlue litmus paper dipped in lemon juice turns:On the pH scale, a neutral solution (such as pure water) has a pH of:Which of the following is a synthetic indicator used to test acids and bases?Neutralisation of an acid by a base produces:Bases produce which ion when dissolved in water?Acids produce which ion when dissolved in water?A solution with a pH greater than 7 is: