Question

When is galvanic corrosion likely to be most rapid and severe?

1) When two dissimilar metals are in contact with each other
2) When two similar metals are in contact with each other
3) When a metal is in contact with a non-metal
4) When a metal is in contact with an acid

Answer 1

Galvanic corrosion is most rapid and severe when two dissimilar metals are in contact with each other.

Step-by-step explanation:

Galvanic corrosion is likely to be most rapid and severe when two dissimilar metals are in contact with each other. When two dissimilar metals are in contact, electrons are transferred from one metal to the other, causing the more easily oxidized metal to corrode at a faster rate. This can be seen in older homes where copper and iron pipes are directly connected to each other, resulting in rapid corrosion of the iron near the connection.