The reaction of zinc with excess of aqueous alkali, evolves…

Chemistry D and F - Block Elements JEE Main 2022 Single Correct MCQ

Published by: CGP EDU Academic Team

Published on: August 14, 2026

The reaction of zinc with excess of aqueous alkali, evolves hydrogen gas and gives :

Zn(OH) 2

ZnO

[Zn(OH) 4 ] 2-

[ZnO 2 ] 2-

Text Solution

Verified by Experts

The correct answer is:

Zinc dissolves in excess of aqueous alkali

However, this reaction in NCERT is given as

Zn +2NaOH Na 2 ZnO 2 + H 2

is anhydrous form of [Zn(OH) 4 ] 2-

So in aqueous medium best answer of this question is [Zn(OH) 4 ] 2-

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