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7. Redox reactions — Chemistry STD 11 Science — Question

Rajasthan BoardEnglish MediumSTD 11 ScienceChemistry7. Redox reactions1 Mark
MCQ
Oxidation state of $Fe$ in $F{e_3}{O_4}$ is
  • A
    $\frac{3}{2}$
  • B
    $\frac{4}{5}$
  • C
    $\frac{5}{4}$
  • ✓
    $\frac{8}{3}$
✓

Answer

Correct option: D.
$\frac{8}{3}$
(d) $\mathop F\limits^ * {e_3}{O_4}$

$3x + ( - 8) = 0$; $3x - 8 = 0$

$3x = 8$; $x = \frac{8}{3}$.

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