Question

please tell the answer of this question now
as its very urgent
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Answer 1

Answer:

Zn + 2NaOH → Na2ZnO2 + H2

*the gas evolved is hydrogen gas. we can test this gas by bringing a lit match near it as it burns with a pop sound.

*let the same metal (Zn) react with hydrochloric acid

*then hydrogen gas is evolved

2HCl + Zn → ZnCl2 + H2