Question

9. How Iron articles are prevented them from rusting?
Iron articles are painted
Iron articles are placed in oxygen free atmosphere
оооо
Iron articles are placed in moisture free atmosphere
Any one of these​

Answer 1

iron particles are placed in moist free atmosphere

Answer 2

To prevent an iron article from rusting you just need to cut its contact with oxygen.

So, all of the given ways can be used to prevent iron article from rusting.

They, correct option is Any of these.