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Which process involves corrosion?...

Which process involves corrosion?

A

Brown deposits on iron articles

B

Green deposits on battery terminals

C

Black deposits on silver coin

D

All of the above

Text Solution

Verified by Experts

The correct Answer is:
D
`2Fe + 3/2 O_(2) to underset("Brown")(Fe_(2)O_(3))`
`Cu + CO_(2) + H_(2)O to CuCO_(3).underset("Green")(Cu(OH)_(2))`
`Ag + H_(2)S to underset("Black")(Ag_(2)S)`
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