What is the colour of copper sulphide?

Black

The correct answer is \((1)\) Black.

Copper sulfide (Cu₂S) is a black-colored compound. It is an inorganic chemical compound composed of copper (Cu) and sulfur (S) atoms. The black color is characteristic of many sulfide compounds, including copper sulfide, due to their specific crystal structures and electronic properties that absorb and reflect light in a way that results in a black appearance.