Can you solve the MAGNET RIDDLE? ft YouTube CEO Susan Wojcicki

quickly pass the both the pieces one by one  near any metal( magnetic or non magnetic) the piece that is harder to pass is magnetic due to eddy current generation in the metal
 second technique is to suspend the  pieces magnetic one will allign   itself in north south direction
 third one is real simple just break it and new poles will be formed and magnetic piece will start to repel also whereas non magnetic one will not show any such sign
fourth is to heat or drop or rub two pieces hardly one by one , the one which show more decrease in attraction after doing these actions is magnetic