question_answer

  Which of the statements about the reaction below are incorrect? 2PbO(s) + C(s) ® 2Pb(s) + CO2(g)                 (a) Lead is getting reduced,        (b) Carbon dioxide is getting oxidized. (c) Carbon is getting oxidized,     (d) Lead oxide is getting reduced. (i) (a) and (6)                     (ii) (a) and (c)                 (iii) (a), (b) and (c)           (iv) all                          [NCERT]

Answer:

                  By coating paint over iron articles the contact of moist air with iron is cut off. So, moist air cannot attack on the surface of iron articles and there is no risk of rusting (corrosion of iron). Thus, iron articles can be protected from damage for many years.