Iron pipes, lying in acidic soil, are often attached to the blocks of magnesium for their protection from rusting, because magnesium :
(a) is lighter than iron
(b) is readily converted into positive ion
(c) forms a corrosion-resistant alloy with iron
(d) prevents air from reaching the surface of iron
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D IS CORRECT ANSWER........
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➡️ Option (D)
That's it..
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