Zinc with sodium hydroxide: the product formed

1. A.
   Sodium oxide
2. B.
   Sodium zincate
3. C.
   Zinc hydroxide
4. D.
   Zinc oxide

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1. A.
   $\mathrm{NaOH + Zn \rightarrow NaZnO_2 + H_2O}$
2. B.
   $\mathrm{2NaOH + Zn \rightarrow Na_2ZnO_2 + H_2}$
3. C.
   $\mathrm{2NaOH + Zn \rightarrow NaZnO_2 + H_2}$
4. D.
   $\mathrm{2NaOH + Zn \rightarrow Na_2ZnO_2 + H_2O}$

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1. A.
   $\mathrm{Na_2ZnO}$
2. B.
   $\mathrm{NaZnO_2}$
3. C.
   $\mathrm{Na_2ZnO_2}$
4. D.
   $\mathrm{NaZn(OH)_2}$

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1. A.
   $\mathrm{Na_2O}$
2. B.
   $\mathrm{ZnO}$
3. C.
   $\mathrm{Na_2ZnO_2}$
4. D.
   $\mathrm{Zn(OH)_2}$

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