Which of the following oxidation reactions are carried out by both $\mathrm{K}_2 \mathrm{Cr}_2 \mathrm{O}_7$ and $\mathrm{KMnO}_4$ in acidic medium? A. $\mathrm{I}^{-} \rightarrow \mathrm{I}_2$ B. $\mathrm{S}^{2-} \rightarrow \mathrm{S}$ C. $\mathrm{Fe}^{2+} \rightarrow \mathrm{Fe}^{3+}$ D. $\mathrm{I}^{-} \rightarrow \mathrm{IO}_3^{-}$ E. $\mathrm{S}_2 \mathrm{O}_3{ }^{2-} \rightarrow \mathrm{SO}_4{ }^{2-}$ Choose the correct answer from the options given below:

JEE CHEMISTRY MCQ: d & f- BLOCK ELEMENTS

1 Medium

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Analyzing +4 | -1

Which of the following oxidation reactions are carried out by both

\mathrm{K}_2 \mathrm{Cr}_2 \mathrm{O}_7

and

\mathrm{KMnO}_4

in acidic medium?

A.

\mathrm{I}^{-} \rightarrow \mathrm{I}_2

\mathrm{S}^{2-} \rightarrow \mathrm{S}

\mathrm{Fe}^{2+} \rightarrow \mathrm{Fe}^{3+}

\mathrm{I}^{-} \rightarrow \mathrm{IO}_3^{-}

\mathrm{S}_2 \mathrm{O}_3{ }^{2-} \rightarrow \mathrm{SO}_4{ }^{2-}

Choose the correct answer from the options given below:

View answer and explanation

Correct option: C

A, B and C only

Option C (6) is correct because in

\mathrm{B}_2 \mathrm{H}_6

, there are four terminal hydrogen atoms and two boron atoms that lie in one plane.