railway RRB JE (CBT I + CBT II) Mock Test 2024 General Science Chemistry Chemical Reaction

What is the product of the following reaction?

2NaOH (aq) + Zn (s) →

1
Na2ZnO2 (s) and H2O (l)
2
ZnO2 (s) and N2O (g)
3
Na2ZnO2 (s) and H2 (g)
4
ZnO2 (s) and H2O (l) 
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