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Question

When zinc react with hot and concentrated NaOH, a colourless salt is formed. Name this colourless salt.


A

Sodium meta aluminate

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B

Sodium zincate

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C

Zinc hydroxide

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D

Zinc oxide

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Solution

The correct option is B

Sodium zincate


Zinc react with hot and concentrated NaOH to give sodium zincate and liberate hydrogen.

Zn+2NaOHNa2ZnO2+H2


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