Question

If coating of less active metal is injured or broken then corrosion.....

Answer 1

$\huge\mathfrak\purple{Hello,}$

$\huge\underline{Answer:}$

Even when the protective zinc coating is broken, the underlying steel is not attacked. Instead, the zinc is corroded because it is less "noble"; only after it has been consumed can rusting of the base metal occur in earnest.

$Hope\:it\:helps!$

Regards,

$\huge\mathfrak\purple{Aaravxxx}$