Which substance is used to disinfect water because it can provide chlorine?
Answer and explanation
Correct answer: Bleaching powder
Bleaching powder, commonly represented as calcium oxychloride, releases chlorine or chlorine-containing disinfecting species in water. These substances oxidise and destroy many harmful microorganisms, making the water safer. Baking soda and washing soda are carbonates used for other purposes, while blue vitriol is copper sulfate and is not the standard school-level disinfectant for drinking-water treatment. Thus option A is correct.
Frequently asked questions
What is the correct answer to this question?
Bleaching powder
Why is this the correct answer?
Bleaching powder, commonly represented as calcium oxychloride, releases chlorine or chlorine-containing disinfecting species in water. These substances oxidise and destroy many harmful microorganisms, making the water safer. Baking soda and washing soda are carbonates used for other purposes, while blue vitriol is copper sulfate and is not the standard school-level disinfectant for drinking-water treatment. Thus option A is correct.
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.
