Galvanized iron is coated with a layer of which metal?

Aluminium is more reactive than iron. But aluminium is less easily corroded than iron because

Rusting of iron is catalyzed by which of the following?

Metal can be prevented from rusting by

Which of the following statements regarding the rusting of iron is incorrect?

Given the half-cell reactions:
$2H^+ + \frac{1}{2}O_2 + 2e^- \to H_2O(l), E^o = 1.23 \ V$
$Fe^{2+} + 2e^- \to Fe(s), E^o = -0.44 \ V$
Calculate the value of $\Delta G^o$ in $kJ$ for the overall corrosion reaction.