Which of the following reactiongives H_(2) gas ? – InterviewSolution

1.	Which of the following reactiongives H_(2) gas ?
Answer» `NaNH_(2)+H_(2)O rarr` `ZN+"CONC."H_(2)SO_(4)rarr` `Zn+" aq" NaOH rarr` `CaH_(2)+H_(2)O rarr` Solution :`NaNH_(2)+H_(2)O rarrNaOH+NH_(3)UARR` `underset(("conc."))(Zn+H_(2)SO_(4))rarrZnSO_(4)+SO_(2)uarr +H_(2)O` `Zn+aq. NaOH rarr Na_(2)ZnO_(2)+H_(2)uarr` `CaH_(2)=H_(2)O rarrCa(OH)_(2)+H_(2)uarr`

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