In the reaction of sodium hydride and water:

Sodium is reduced

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Hydrogen is oxidised

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Hydrogen is reduced

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No element is oxidised or reduced

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Solution

The correct options are
B Hydrogen is oxidised
C Hydrogen is reduced
$N a H + H_{2} O \to N a O H + H_{2}$
The oxidation state of H in
$N a H = - 1$
$H_{2} O = + 1$
$N a O H = + 1$
$H_{2} = 0$
Therefore, it is concluded that H is both oxidised and reduced in this reaction.

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Similar questions

Which one chemical reaction occurs during photosynthesis ?

(a) Carbon dioxide is reduced and water is oxidised.

(b) Water is reduced and carbon dioxide is oxidised.

(d) Both carbon dioxide and water are reduced.

L A H

S B H

3 B r_{2} + 6 C O_{3}^{2 -} + 3 H_{2} O \to 5 B r^{-} + B r O_{3}^{-} + 6 H C O_{3}^{-}

A l + M n O_{4}^{-} \to A l (O H)_{4}^{-} + M n O_{2}

X

X

Y

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