Chemistry Question from JEE Main 2025 · 2 April, Shift 1

Choose the correct tests with respective observations.

(A) $\mathrm{CuSO_4}$ (acidified with acetic acid) $+\ \mathrm{K_4[Fe(CN)_6]} \rightarrow$ Chocolate brown precipitate.

(B) $\mathrm{FeCl_3} +\ \mathrm{K_4[Fe(CN)_6]} \rightarrow$ Prussian blue precipitate.

(C) $\mathrm{ZnCl_2} +\ \mathrm{K_4[Fe(CN)_6]}$, neutralised with $\mathrm{NH_4OH} \rightarrow$ White or bluish white precipitate.

(D) $\mathrm{MgCl_2} +\ \mathrm{K_4[Fe(CN)_6]} \rightarrow$ Blue precipitate.

(E) $\mathrm{BaCl_2} +\ \mathrm{K_4[Fe(CN)_6]}$, neutralised with $\mathrm{NaOH} \rightarrow$ White precipitate.

Choose the correct answer from the options given below: