Which is the correct method of preparing bleaching powder?
Answer and explanation
Correct answer: Passing chlorine over dry slaked lime
Bleaching powder, commonly represented as calcium oxychloride (CaOCl2) at school level, is prepared by passing chlorine gas over dry slaked lime, Ca(OH)2. The reaction produces the bleaching compound used for disinfecting water and bleaching materials. Thus option A gives the correct preparation method. The other mixtures do not provide the required chemical reaction or product.
Frequently asked questions
What is the correct answer to this question?
Passing chlorine over dry slaked lime
Why is this the correct answer?
Bleaching powder, commonly represented as calcium oxychloride (CaOCl2) at school level, is prepared by passing chlorine gas over dry slaked lime, Ca(OH)2. The reaction produces the bleaching compound used for disinfecting water and bleaching materials. Thus option A gives the correct preparation method. The other mixtures do not provide the required chemical reaction or product.
Which subject and chapter does this question cover?
This is a Class 10 Science question. Chapter: Chemical Substances – Nature and Behaviour. Topic: Acids, Bases, and Salts.
