Statement I : Rusting of iron increases with decrease in pH.

Statement II : Reduction of O₂ is favoured at lower P^H

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Both statement - I and II are incorrect

Statement I is correct and Statement II is incorrect

Statement I and II are correct

Statement - I is incorrect and Statement - II is correct

answer is A.

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Detailed Solution

During rusting cathode reaction is

$\large {O_{2\left( g \right)}} + 4H_{\left( {aq} \right)}^ + + 4{e^ - } \to 2{H_2}O$

As pH decreases [H⁺] increases. According to nernst equation reduction potential increases,tendency of O₂ undergo reduction increases.

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