Which gas is used to prepare bleaching powder?
Answer and explanation
Correct answer: Chlorine
The governing concept is the preparation and use of bleaching powder, also called calcium oxychloride in school-level chemistry. Chlorine gas is passed over dry slaked lime, Ca(OH)₂, to form bleaching powder. Thus option B is correct. Hydrogen and nitrogen do not produce bleaching powder, while carbon dioxide is not the reacting gas in this preparation.
Frequently asked questions
What is the correct answer to this question?
Chlorine
Why is this the correct answer?
The governing concept is the preparation and use of bleaching powder, also called calcium oxychloride in school-level chemistry. Chlorine gas is passed over dry slaked lime, Ca(OH)₂, to form bleaching powder. Thus option B is correct. Hydrogen and nitrogen do not produce bleaching powder, while carbon dioxide is not the reacting gas 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.
