Q12 / 150 · MHT CET 2021 (21 Sep Shift 1) · Chemistry

Oxidation sate of $\mathrm{Cr}$ in potassium dichromate is

  • A
    +7
  • Correct answer
    B
    +6
  • C
    +1
  • D
    +5

Solution

Potassium dichromate $\mathrm{K}_2 \mathrm{Cr}_2 \mathrm{O}_7$ $$ \begin{aligned} & 1 \times 2+\mathrm{x} \times 2-2 \times 7=0^{+1} \mathrm{x}^{-2} \\ & 2 \mathrm{x}=12 \\ & \mathrm{X}=+6 \end{aligned} $$

Hence, the correct answer is option: 'B'.

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