2. Free Ncert Solutions
  3. 10th Class
  4. Science
  5. Chemical Reactions and Equations

10th Class Science Chemical Reactions and Equations

  • question_answer 25)
                  A shiny brown coloured element 'X' on heating in air becomes black in colour. Name the element 'X' and the black coloured compound formed.                                       

    Answer:

    The element X is copper, Cu Black coloured coating is of copper oxide, CuO.      


You need to login to perform this action.
You will be redirected in 3 sec spinner