MCQ
The $"O - N - O"$ bond angle is maximum in
- A$N_2O$
- B$NO^+_2$
- C$NO^-_2$
- D$NO^-_3$

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Codes: $ \quad P \quad Q \quad R \quad S $
$4Fe + 3{O_2}\, \to \,4F{e^{3 + }} + 6{O^{2 - }}$
Which one of the following statement is incorrect
