Chapter 1

NCERT
Class 10
Science
Solutions
17. A shiny brown coloured element ‘X’ on heating in air becomes black in colour. Name the element ‘X’ and the black coloured compound formed.

Question:

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 shiny brown colored element X is called copper which when heated in air forms copper oxide. It is of black colour.

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