Question

Identify the inorganic sulphides that are yellow in colour: 
(A) \( ({NH}_4)_2{S} \) 
(B) \( {PbS} \) 
(C) \( {CuS} \) 
(D) \( {As}_2{S}_3 \) 
(E) \( {As}_2{S}_5 \) 
Choose the correct answer from the options given below:

• A. (A) and (B) only
• B. (A) and (C) only
• C. (A), (D) and (E) only
• D. (D) and (E) only

Hint:

Arsenic sulphides (\({As}_2{S}_3\) and \({As}_2{S}_5\)) are widely used in pigments due to their yellow coloration.

Answer 1

The Correct Option is D

- Arsenic sulphides (\({As}_2{S}_3\) and \({As}_2{S}_5\)) are yellow.
- Lead sulphide (\({PbS}\)) and Copper sulphide (\({CuS}\)) are black.
- Ammonium sulphide (\({(NH}_4)_2{S}\)) is colorless to slightly yellowish, but not considered a prominent yellow sulphide.