Question

 A substance X used for coating iron articles is added to a blue solution of a reddish brown metalY, the colour of the solution gets discharged identify X and Y.

Answer 1

substance X is copper.

And, Solution y is Iron chloride.

Reaction. ⤵⤵

Cu + Fecl2 → cucl2+ Fe

here, Brown colour of fecl2 is changes to blue color of cucl2.