Question

A metal x is found in the form of the filing which burns vigrosly when sprinkle on flame when filings are treated with sulphur black coloured comp. Y . Xis made with dil.HCl to liberate h2 gas. Identify x,y,z and write the chemical eq.

Answer 1

X is iron (Fe)
When iron is treated with sulphur, iron sulphide is formed
Fe + S --------->FeS
Therefore Y is iron sulphide

When iron reacts with HCl
Fe+2HCl------->FeCl2+H2

There is no z in ur question.. Check ur question