When an iron object is plated with tin, tin does not act as sacrificial anode in protecting against corrosion, because:

tin is more reactive than iron

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tin is less reactive than iron

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reactivity of tin and iron is same

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tin is oxidising agent while iron is not so

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Solution

The correct option is A tin is less reactive than iron
Because tin is less reactive than iron, so when an iron object is placed with tin, it does not act as sacrificial anode in protecting against corrosion.

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Similar questions

Food cans are coated with tin and not with zinc because

(a) zinc is costlier than tin.

(b) zinc has a higher melting point than tin.

(d) zinc is less reactive than tin.

A metal less reactive and another metal more reactive than hydrogen are
(a) aluminium and lead (b) iron and magnesium

E^{o}

Z n_{(a q)}^{2 +} + 2 e^{-} \to Z n_{(s)};

E^{o} = - 0.76

F e_{(a q)}^{2 +} + 2 e^{-} \to 2 F e_{(s)};

E^{o} = - 0.44

S n_{(a q)}^{2 +} + 2 e^{-} \to S n_{(S)};

E^{o} = - 0.14

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