ChemistryJEE Main 4 Apr 2026, Shift 1·Q11·MCQ·Easy–moderate

d- and f-Block · Potassium dichromate properties

Correct statements from the following are

(A)Potassium dichromate is an oxidising agent and it oxidises $\ce{FeSO4}$ to $\ce{Fe2(SO4)3}$ in acidic medium.
(B)Sodium dichromate can be used as primary standard in volumetric estimation.
(C) $\ce{CrO4^2-}$ and $\ce{Cr2O7^2-}$ are interconvertible in aqueous solution by varying the pH of the solution.
(D)Cr–O–Cr bond angle in $\ce{Cr2O7^2-}$ is 126 $^\circ$ .

Choose the correct answer from the options given below :

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