Login
Login
Sign up
Start
Mathmania
Teacher tutorials
TOP
Subjects
Bridge Course
Testworks
Subject updates
Ya+
News
Send feedback
See more
Contacts
About Us
Terms and Conditions
Privacy Policy
PDF chapter test
TRY NOW
Subjects
Science CBSE
Class 7 New
The World of Metals and Non-metals
Pumpa Practice Questions
26.
Rusting and the causes
Exercise condition:
2
m.
Select
the suitable option based on rusting.
1.
When iron undergoes rusting, it produces iron oxide. What does this indicate about the nature of the change?
A new compound is formed
Iron melted
Only state change
The iron metal remains unchanged
2.
If iron nails are stored in a sealed container without air or moisture, what will occur after a few days?
Iron nail rust slowly
Iron nail rust faster
Iron nail will break
Iron nail will not rust
Login
or
Fast registration
Previous exercise
Exit to the topic
Next exercise
Send feedback
Did you find an error?
Send it to us!