Question

Three pins made of copper, aluminium and
iron are kept in moist air for several days. Of
these, which pin will rust?
a) copper
b) aluminium
c) iron
d) all of these​

Answer 1

Answer:

I think so its iron

Explanation:

Iron rusts in the presence of oxygen and water . Since its moist air, so Iron should rust

Answer 2

Answer:

c) iron

Explanation:

because rust is a term used for corrosion of iron it will form a covering of fe2o3.xH2O which is known as rust

copper will too get corroded but it will not forrm rust on it

aluminium will form a protective covering which will prevent it from corrosion

SO THE CORRECT ANSWER IS c) iron