1. A bottle containing a perfume is by mistake left open. After a few days, its volume was found to h
reduced to half. Explain giving reason.
2. Which property of iron is modified in stainless steel ? What is done to do on?
Answers
Answer:
1. Perfumes contain a content of alcohol in order to give a soothing feeling to the skin. However, when it is exposed, the alcohol portion, which forms the majority, evaporates and therefore it's volume reduces overtime.
2. Iron is mixed with a variety of alloys which gives it a property to avoid the rust formation due to exposure to oxygen in the atmosphere.
Answer:
1. A bottle containing a perfume is by mistake left open.
After a few days, the volume of your perfume bottle was found to have reduced to half.
It is because the perfume evaporates very quickly.
It is the same even left open because it has a very minimal booing point. It is a well-known fact that perfume is a petroleum product.
2. Rusting of iron is modified in stainless steel. It is done by alloying iron with Nickel and chromium. Iron when exposed to moist air gets covered with a layer of brown powdery material called rust. Rust damages the iron objects and causes loss to make iron corrosion resistant.