Question

A metal X left in moist air for a longer time, loses its shiny brown surface and gains a Green coat. why has this happened? name and give chemical formula of this give coloured compound and identify the metal. list two ways to prevent this process.

Answer 1

This Is Called Corrosion .
Ways To Prevent are.......
1.By Oiling
2.By Painting

Answer 2

The elements x is corrosion

To prevent it

By oiling it

By painting it

By greasing it