Question

A small piece of aluminium metal was placed in a beaker containing a greenish solution. After some time, a grey coating was observed on the aluminium piece. The greenish solution is most likely to be (1) salt solution of copper metal
(2) salt solution of iron metal (3) salt solution of zinc metal
(4) salt solution of aluminium metal

Answer 1

A small piece of aluminium metal was placed in a beaker containing a greenish solution. After some time, a grey coating was observed on the aluminium piece. The greenish solution is most likely to be

3) salt solution of zinc metal