Hydrogen is not obtained when zinc reacts wit | vedclass

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(A) . $Zn$ does not react with cold water.$Zn$ reacts with steam or hot water to yield $H_2$ gas:$Zn + H_2O(g) 	o ZnO + H_2$$Zn$ reacts with dilute $

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Cold water

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(A) . $Zn$ does not react with cold water.$Zn$ reacts with steam or hot water to yield $H_2$ gas:$Zn + H_2O(g) 	o ZnO + H_2$$Zn$ reacts with dilute $H_2SO_4$ to produce $H_2$ gas:$Zn + H_2SO_4(dil) 	o ZnSO_4 + H_2$$Zn$ reacts with dilute $HCl$ to produce $H_2$ gas:$Zn + 2HCl(dil) 	o ZnCl_2 + H_2$$Zn$ reacts with hot $20 \%$ $NaOH$ to produce $H_2$ gas:$Zn + 2NaOH(20 \%) \xrightarrow{\Delta} Na_2ZnO_2 + H_2$

Hydrogen is not obtained when zinc reacts with

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