Which of the following metal reacts reversibly with steam?

Aluminium

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Copper

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Lead

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Potassium

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Iron

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Sulphur

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Solution

The correct option is E Iron
Metals in the reactivity series from magnesium to iron react with steam water(g) but not water (l). The reaction forms the metal oxide and hydrogen gas. The reaction between iron and steam is reversible. Tin, copper, lead, silver, gold and platinum do not react with water or steam.
$2 F e (s) + {3 H}_{2} O (g) \to {F e}_{2} O_{3} (s) + {3 H}_{2} (g)$

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