You are in a room where there are no objects except for two iron rods Only one of them is a magnet How can you identify the magnet?

Take a rod and touch with its end the middle of the second rod. If they move closer to one another, then you have a magnet in your hand. The real magnet has a magnetic field at its poles, but not in its center. So, as mentioned earlier, if you take the iron bar and touch its tip to the magnet's center the iron bar will not be attracted. This assumes that the magnet's poles are at its ends. 
There's no way you can identify which one is the magnet, 'cause there's no magnet in the room, only two iron rods.


Tie your shirt or belt or sock etc. in the centre of rod and dangle it loosely and the magnet should point North quicker and more obvious than the non active rod