Login
Home
TOP
Send feedback
Login
Subjects
Chemistry CBSE Live product
Class 7
The World of Metals and Non-metals
Effect of water on materials
3.
Rusting and its prevention
Question:
2
m.
Pick
the suitable option based on rusting.
1.
Which of the following evidence indicates that rusting is a chemical change?
Change in physical appearance
The original iron cannot be reversed
Rust can be scraped off easily
It is a fast change without any external conditions
2.
Why the process of rusting is considered a slow chemical change?
It occurs only under sunlight
It can be reversed
It happens in short time
Rusting occurs slowly under natural conditions
Login
or
Fast registration
Previous task
Exit to the topic
Next task
Send feedback
Did you find an error?
Send it to us!
