Which of the statements is true or false

Which of the statements is true or false

1. Extraction of metals from its ore is an oxidation process. 
2. Pure iron does not rusts. 
3. The alloy bell metal contains copper. 
4. Presence of Cl^– ion accelerates rusting. 
5. Aluminium corrodes easily by formation Al₂O₃ on its surface.

Answer

1. False
   The extraction of metals from their ore is a reduction process.
2. True
3. True
4. True
5. False.
   Aluminum does not corrode easily by forming Al2O3 on its surface. In fact, aluminium forms a thin and protective layer of aluminium oxide (Al2O3) on its surface that prevents further corrosion.