1.

Statement (A) : Corrosion of galvanized iron is not possible. Reason (R) : Electrode potential of zinc is more negative than of iron.

Answer»

Both statement and reasons are true. And REASON is correct explanation of statement.
Both statement and reasons are true, but reason is not the correct explanation of statement.
But reason is not correct explanation of statement. (Statement is true but reason is false).
Statement si false but reason is true.

Solution :Electrode potential of ZINC is more negative than iron. So it liberates electrons more easily than iron. So its corrosion OCCUR first. Hence, corrosion of iron STARTS only after complete oxidation of zinc.


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