Question

On adding Carbon disulphide in greyish black compound of Iron sulphide, the correct observation is :
(a) the solution of Carbon disulphide colourless.
(b) the solution turns blue.
(c) the solution of Carbon disulphide turns green.
(d) the solution of Carbon disulphide turns yellow.

Answer 1

Carbon disulphide is a colourless liquid.
Iron sulphide is ionic compound while carbon disulphide is a non-polar molecule.

Iron sulphide is not soluble in carbon disulphide and hence the carbon disulphide remains colourless ( option a).