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The reaction of zinc with dilute and concentrated nitric acid, respectively, produce

$NO_{2}$ and

$NO$

$NO$ and

$N_{2}O$

$NO_{2}$ and

$N_{2}O$

$N_{2}O$ and

$NO_{2}$

Option D

$Zn$ + $4HNO_{3} (conc)\rightarrow$ $Zn (NO_{3})_{2}$ + $2H_{2}O$ + $2NO_{2}$

$4Zn$ + $10HNO_{3}\rightarrow$ $4Zn(NO_{3})_{2}$ + $N_{2}O$ + $5H_{2}O$

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