Food cans are actually made up of iron but are coated with tin which is less reactive than iron protecting it from getting corroded.
Do atoms normally exist in free state? Why not? If not, how do they exist? If yes, explain? [3 MARKS]
Why hasn't the iron pillar of Delhi corroded when it is made of metal
Other than iron does any other metal get rusted? If yes, explain how? [3 MARKS]
Why are these articles are made up of plastic? Do they follow the 4R principle? [3 MARKS]