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:

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Arsenic sulphides (\({As}_2{S}_3\) and \({As}_2{S}_5\)) are widely used in pigments due to their yellow coloration.
Updated On: Mar 17, 2025
  • (A) and (B) only
  • (A) and (C) only
  • (A), (D) and (E) only
  • (D) and (E) only
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The Correct Option is D

Solution and Explanation

  • Arsenic sulphides (\({As}_2{S}_3\) and \({As}_2{S}_5\)) are known to be yellow in color.
  • Lead sulphide (\({PbS}\)) and Copper sulphide (\({CuS}\)) are typically black in appearance.
  • Ammonium sulphide (\({(NH}_4)_2{S}\)) is colorless or slightly yellowish but is not classified among the prominent yellow sulphides.
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