Why is it proper to protect bleaching powder from moisture and open air?
Answer and explanation
Correct answer: Its available chlorine may decrease
The governing concept is the stability of bleaching powder and its available chlorine. Bleaching powder is used because it can release chlorine for bleaching and disinfection. Exposure to moisture and air promotes slow decomposition and loss of available chlorine, reducing its effectiveness. Thus option A is correct, and it should be stored in a dry, tightly closed container. The other options describe impossible or chemically unrelated changes, such as formation of gold or gypsum.
Frequently asked questions
What is the correct answer to this question?
Its available chlorine may decrease
Why is this the correct answer?
The governing concept is the stability of bleaching powder and its available chlorine. Bleaching powder is used because it can release chlorine for bleaching and disinfection. Exposure to moisture and air promotes slow decomposition and loss of available chlorine, reducing its effectiveness. Thus option A is correct, and it should be stored in a dry, tightly closed container. The other options describe impossible or chemically unrelated changes, such as formation of gold or gypsum.
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.
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