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JEE Main levelOne or more correct optionsDifficulty 2 of 3qc087

Which of the following statements about the group IV sulphides are correct?

A $ZnS$ is black and insoluble in dilute $HCl$
B $NiS$ and $CoS$ are black
C $MnS$ is buff and dissolves in dilute $HCl$
D $ZnS$ is white and dissolves in dilute $HCl$

Answer: B, C, D

The black sulphides in group IV are NiS and CoS. ZnS (white) and MnS (buff) have larger

K_{s p}

values and dissolve in dilute HCl. The option calling ZnS black and insoluble is wrong.

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