Chemistry · 2025
JEE Main · 24 January 2025, Shift 2 · Q59
Find the compound 'A' from the following reaction sequences. A → aqua-regia B →[ (2) AcOH ] (1) KNO_2 ∣ NH_4 OH yellow ppt
Find the compound 'A' from the following reaction sequences.
$$\mathrm{A} \xrightarrow{\text { aqua-regia }} \mathrm{B} \xrightarrow[\text { (2) AcOH }]{\text { (1) } \mathrm{KNO}_2 \mid \mathrm{NH}_4 \mathrm{OH}} \text { yellow ppt }
$$
Official answer
From NTA’s final answer key for this paper.
(4)
CoS
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