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Which gas is produced during the reaction of a base with metals?

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a

Hydrogen

b

Carbon dioxide

c

Oxygen

d

Nitrogen

answer is A.

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Detailed Solution

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Hydrogen gas is produced during the reaction of a base with metals.
The creation of salt and the release of hydrogen gas occur when a base reacts with a metal.
With the release of hydrogen gas, metals like zinc react with bases like sodium hydroxide to create sodium zincate. Its reaction is given as

Zn + 2 NaOH \to N a_{2} Zn O_{2} + H_{2}

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