Multiple choice

The metal chiefly used for galvanising iron is

  1. zink

  2. mercury

  3. cadmium

  4. tin

Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

Galvanization is the process of applying a protective coating of zinc to iron or steel to prevent rusting. Zinc acts as a sacrificial anode, corroding in place of the iron. Note that 'zink' is a common misspelling of 'zinc'.