JEE Main 2025 — Salt Analysis Question with Solution

We want to identify which among the listed sulfides are yellow in color:

$(\mathbf{N}{\mathbf{H}}_4{)}_2\mathbf{S}$

Ammonium sulfide is typically encountered as an aqueous solution that can be colorless to slightly yellowish in solution form. It is not known as a distinct “yellow sulfide” compound in the same sense as solid colored sulfides like orpiment (see below).

$\mathbf{PbS}$ (lead(II) sulfide)

$\text{PbS}$ (Galena) is well-known to be black or grayish‐black in color.

$\mathbf{CuS}$ (copper(II) sulfide)

$\text{CuS}$ is black (covellite).

$\mathbf{A}{\mathbf{s}}_2{\mathbf{S}}_3$ (arsenic(III) sulfide)

${\text{As}}_2{\text{S}}_3$ (orpiment) is characteristically yellow.

$\mathbf{A}{\mathbf{s}}_2{\mathbf{S}}_5$ (arsenic(V) sulfide)

${\text{As}}_2{\text{S}}_5$ is also typically a yellow sulfide.

Hence, among the options given,

$(\mathbf{D})A{s}_2{S}_3$ and

$(\mathbf{E})A{s}_2{S}_5$

are the two yellow inorganic sulfides.

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Correct Choice

$\boxed{\text{(D) and (E) only.}}$