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When Zn pieces are dropped in NaOH solution H2(g) is obtained and soluble ...... is obtained

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When Zn pieces are dropped in NaOH solution H2(g) is obtained and soluble ...... is obtained

(a)  Na2ZnO3 

(b)  NaZnO2 

(c)  Na4ZnO3 

(d)  Na3ZnO2

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Correct option   (b)  NaZnO2

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