Which substance is important in both disinfecting and bleaching uses?
Answer and explanation
Correct answer: Bleaching powder
The governing concept is the chemical action of available chlorine. Bleaching powder, commonly represented as calcium oxychloride, releases chlorine or hypochlorous species that oxidise coloured substances and many microorganisms. Thus it is used for bleaching cloth and paper and for disinfecting drinking water and surfaces. Gypsum is mainly used in plaster products, washing soda is a cleaning and softening agent, and sodium chloride is common salt rather than a bleaching disinfectant.
Frequently asked questions
What is the correct answer to this question?
Bleaching powder
Why is this the correct answer?
The governing concept is the chemical action of available chlorine. Bleaching powder, commonly represented as calcium oxychloride, releases chlorine or hypochlorous species that oxidise coloured substances and many microorganisms. Thus it is used for bleaching cloth and paper and for disinfecting drinking water and surfaces. Gypsum is mainly used in plaster products, washing soda is a cleaning and softening agent, and sodium chloride is common salt rather than a bleaching disinfectant.
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.
