Why is bleaching powder useful for disinfecting drinking water?
Answer and explanation
Correct answer: It provides chlorine that helps kill germs
Bleaching powder releases available chlorine when used appropriately in water. Chlorine and its active species damage essential components of many disease-causing microorganisms, thereby reducing contamination and helping disinfect the water. Thus option A correctly explains its use. It does not sweeten water, convert it into oil, or produce sodium metal; those alternatives contradict its known chemical action.
Frequently asked questions
What is the correct answer to this question?
It provides chlorine that helps kill germs
Why is this the correct answer?
Bleaching powder releases available chlorine when used appropriately in water. Chlorine and its active species damage essential components of many disease-causing microorganisms, thereby reducing contamination and helping disinfect the water. Thus option A correctly explains its use. It does not sweeten water, convert it into oil, or produce sodium metal; those alternatives contradict its known chemical action.
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.
