ChemistryJEE Main 2 Apr 2026, Shift 1·Q20·MCQ·Easy–moderate

Practical / Qualitative Analysis · Salt analysis barium and phosphate

A salt with few drops of conc. HCl gives apple green colour in flame test. The group precipitate of the salt is dissolved in acetic acid and treated with

\ce{K2CrO4}

to give yellow precipitate. When the sodium carbonate extract of the salt solution is heated with conc.

\ce{HNO3}

and ammonium molybdate, it resulted in a canary yellow precipitate. The cation and anion present in the salt are respectively.

(1) $\ce{Ca^2+}$ and $\ce{SO4^2-}$
(2) $\ce{Ba^2+}$ and $\ce{PO4^3-}$
(3) $\ce{Mn^2+}$ and $\ce{PO4^3-}$
(4) $\ce{Ba^2+}$ and $\ce{SO4^2-}$

We corrected a printing error in the original paper

Source printed “it resulted a canary yellow precipitate”.

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