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Hydrogen question bank (Chemistry)

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Q1.

The mass of iron converted into $Fe_3O_4$ by the action of $18$ g of steam is :
(Given : Molar mass of H, O and Fe are $1$, $16$ and $56$ g mol$^{-1}$ respectively)
Assume iron is present in excess :

(A)

$2.1$ g

(B)

$4.2$ g

(C)

$21$ g

(D)

$42$ g

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Q2.

During water-gas shift reaction

(A)

Carbon monoxide is oxidized to carbon dioxide.

(B)

Water is evaporated in presence of catalyst.

(C)

Carbon is oxidized to carbon monoxide.

(D)

Carbon dioxide is reduced to carbon monoxide.

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