Iron pipes lying under acidic soil are often attached to blocks of magnesium for protection from rusting. Magnesium offers protection to iron against corrosion because it

Given below are two statements:
Statement $I$: Corrosion is an electrochemical phenomenon in which pure metal acts as an anode and impure metal as a cathode.
Statement $II$: The rate of corrosion is more in alkaline medium than in acidic medium.
In the light of the above statements,choose the correct answer from the options given below:

Identify the correct statement.

Several blocks of magnesium are fixed to the bottom of a ship to

Rusting of iron is catalyzed by which of the following?

What are the anode and cathode in the galvanic cell of iron corrosion?