Zinc reacts with NaOH solution to produce ________.

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Na₂ZnO₂

O₂

NO₂

NH₃

answer is B.

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Detailed Solution

Zinc reacts with NaOH, a solution to produce Sodium zincate.
Zn + 2NaOH → Na₂ZnO₂+ H₂(g)
Zinc is amphoteric metal as it reacts with both acid and base. It reacts with Sodium hydroxide to form Sodium zincate (Na₂ZnO₂) and hydrogen gas. This reaction occurs at a temperature near 550°C. In this process hydrogen is the only gas that is produced, so that is easily distinguishable.

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