Question

a) What is the name given to corrosion of Iron?
b) What is the colour of coating formed on silver and copper?
c) What damage is caused by corrosion?
d) How can we prevent corrosion?

Answer 1

a) The name given to corrosion of iron is rusting.
b) The colour of coating formed on silver is black and on copper is green.
c) Because of the corrosion buildings and bridges can collapse and oil pipelines can break and many other damages can be caused.
d) To prevent corrosion:
(i) we can use non-corrosive metals like aluminium and stainless steels.
(ii) The area around metal surface should be dry.