Login
Login
Sign up
Home
TOP
Send feedback
See more
Terms and Conditions
Privacy Policy
Subjects
Science CBSE Homework Assignments
Class 10
Metals and Non-Metals
Corrosion
2.
Corrosion II
Task:
2
m.
1
.
If copper is kept open in air, it slowly loses its shining brown surface and gains a green coating. It is due to the formation of
\(CuO\)
\(CuCO_3\)
\(CuSO_4\)
\(Cu(NO_3)_2\)
2
.
Which of the following metals are obtained by electrolysis of their chlorides in molten state?
(i) \(Na\)
(ii) \(Ca\)
(iii) \(Fe\)
(iv) \(Cu\)
(i) and (ii)
(i) and (iv)
(i) and (iii)
(iii) and (iv)
Login
or
Fast registration
Previous task
Exit to the topic
Next topic
Send feedback
Did you find an error?
Send it to us!
