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Question

What happens when zinc react with hot and concentrated KOH?


A

Water is formed along with corresponding soluble salt

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B

Hydrogen gas is liberated.

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C

Corresponding insoluble salt is formed

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D

Oxygen gas is liberated

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Solution

The correct option is B

Hydrogen gas is liberated.


Zinc reacts with hot and concentrated KOH to give potassium zincate and liberate hydrogen gas.

Zn+2KOHHot and conc.K2ZnO2Soluble salt+H2


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