1.

The reaction of zinc with dilute and concentrated nitric acid respectively produces :

Answer»

`NO_(2)` and `N_(2)O`
`N_(2)O` and `NO_(2)`
`NO_(2)` and NO
NO and `N_(2)O`

Solution :`4Zn + underset("dilute")(10HNO_(3)) to 4Zn(NO_(3))_(2) + N_(2)O + 5H_(2)O`
`Zn + underset("CONC")(4HNO_(3)) to Zn(NO_(3))_(2) + 2NO_(2) + 2H_(2)O`


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