Why is it not proper to leave bleaching powder open in moist air?
Answer and explanation
Correct answer: Its active chlorine-like effectiveness can decrease
The governing concept is the stability and storage of bleaching powder. Moisture and carbon dioxide from air can gradually decompose or deactivate its available chlorine, reducing its bleaching and disinfecting action. Consequently, bleaching powder should be kept in a dry, tightly closed container. Option A correctly states the practical effect; the other options describe impossible transformations and do not explain why dry storage is required.
Frequently asked questions
What is the correct answer to this question?
Its active chlorine-like effectiveness can decrease
Why is this the correct answer?
The governing concept is the stability and storage of bleaching powder. Moisture and carbon dioxide from air can gradually decompose or deactivate its available chlorine, reducing its bleaching and disinfecting action. Consequently, bleaching powder should be kept in a dry, tightly closed container. Option A correctly states the practical effect; the other options describe impossible transformations and do not explain why dry storage is required.
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.
