Bleaching powder is prepared by action of chlorine on which substance?
Answer and explanation
Correct answer: Dry slaked lime
The governing concept is the preparation of bleaching powder, also called calcium oxychloride. Chlorine gas is passed over dry slaked lime, Ca(OH)₂, to form bleaching powder, commonly represented as CaOCl₂. Thus option A is correct. Sodium chloride is used to make brine, while gypsum and washing soda are not the reactants used in this preparation.
Frequently asked questions
What is the correct answer to this question?
Dry slaked lime
Why is this the correct answer?
The governing concept is the preparation of bleaching powder, also called calcium oxychloride. Chlorine gas is passed over dry slaked lime, Ca(OH)₂, to form bleaching powder, commonly represented as CaOCl₂. Thus option A is correct. Sodium chloride is used to make brine, while gypsum and washing soda are not the reactants used in this preparation.
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.
