निम्नलिखित को पूरा करें
(i) `(NH_(4))_(2) Cr_(2)O_(7) overset("Heat")to`
(ii) `C+HNO_(3) ("concentrated")to`
(iii) `(NH_(4))_(2)SO_(4)+NaOH to `
(iv) `P_(4)+HNO_(3) ("concentrated") to`
(v) `P_(4)+NaOH+H_(2)O to`

Explanation

`underset("अमोनियम डाइक्रोमेट")((NH_(4))_(2) Cr_(2)O_(7) overset("Heat")to underset("क्रोमियम ऑक्साइड")(Cr_(2)O_(3))+N_(2)+4H_(2)O`
(ii) `C+4HNO_(3) ("concentrated") to H_(2)CO_(3)+4NO_(2)+H_(2)O`
(iii) `(NH_(4))_(2) SO_(4)+2NaOH overset("Heat")to 2NH_(3)+Na_(2)SO_(4)+2H_(2)O`
(iv) `P_(4)+20HNO_(3) ("concentrated")to 4H_(3)PO_(4)+20NO_(2) +4H_(2)O`
(v) `P_(4)+3NaOH+3H_(2)O to underset("क्रोमियम ऑक्साइड")(3NaH_(2)PO_(2))+PH_(3)`