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Characteristics of Chemical Reaction

What gases ar...

Question

What gases are liberated when a car battery is being recharged ?

A

Hydrogen and Oxygen

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B

Oxygen and Nitrogen

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C

Hydrogen and Carbon Dioxide

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D

None of the above

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Solution

The correct option is A Hydrogen and Oxygen
Hydrogen and oxygen gases are liberated when a car battery is being recharged.
This corresponds to Hydrogen - oxygen fuel cell.
$2 H_{2} O (l) \to 2 H_{2} (g) + O_{2} (g)$

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