0

2.0kviews

Iron does not rust even if the zinc coating is broken in a galvanized iron pipe. Give reason

written 5.9 years ago by vibhavarikulkarni • 510

modified 4.7 years ago by sanketshingote • 100

advanced engineering chemistry

ADD COMMENT FOLLOW SHARE EDIT

1 Answer

0

24views

written 5.8 years ago by vibhavarikulkarni • 510

Zinc protects iron sacrificially. Since it is more electro-positive than iron and does not permit iron to pass into the solution.

In galvanized articles, zinc continues to protect the underlying iron by galvanic cell action, even if the coating of zinc is broken at any place.

ADD COMMENT SHARE EDIT