MCQ
$\xrightarrow[\Delta ]{{alc.\,KOH}}$ product


- A

- B

- ✓

- D







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$4Fe + 3{O_2}\, \to \,4F{e^{3 + }} + 6{O^{2 - }}$
Which one of the following statement is incorrect
$NO_2^+ \to NO_2 \to NO_2^-$
Give the structural formula of compound $(B)$