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CBSE Class 10 Answered

identify the black coloured element formed on reaction with oxygen
Asked by krittikac02 | 16 Jul, 2009, 08:09: PM
answered-by-expert Expert Answer

The element X is copper which is shiny brown in colour.

On heating in air  it becomes black cloured compound which is copper oxide (CuO)

2 Cu + O2 2 CuO

 

Answered by | 17 Jul, 2009, 10:43: AM

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