5. A shiny brown-coloured metal 'X' on heating in air forms a black coloured compound 'Y.On passing hydrogen gas through compound 'Y', metal 'X' and water are obtained. a) Identify X and Y. b) Name the type of reaction.

5. A shiny brown-coloured metal 'X' on heating in air forms a black co

1.	5. A shiny brown-coloured metal 'X' on heating in air forms a black coloured compound 'Y.On passing hydrogen gas through compound 'Y', metal 'X' and water are obtained. a) Identify X and Y. b) Name the type of reaction.
Answer» a) X - copper Y- CuO B) SINGLE DISPLACEMENT REACTION