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TS EAMCET 2020 (Online) 10th September Morning Shift
MCQ (Single Correct Answer)
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Sodium fusion extract of aniline when heated with ferrous sulphate solution and then acidified with concentrated $\mathrm{H}_2 \mathrm{SO}_4$ from which of the following complexes?

A

$\left[\mathrm{Fe}(\mathrm{CN})_6\right]^{4-}$

B

$\mathrm{Fe}_4\left[\mathrm{Fe}(\mathrm{CN})_6\right]_3 \cdot \times \mathrm{H}_2 \mathrm{O}$

C

$[\mathrm{Fe}(\mathrm{SCN})]^{2+}$

D

$\left[\mathrm{Fe}(\mathrm{CN})_5 \mathrm{NOS}\right]^{4-}$

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