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A shiny brown coloured element ‘X’ on he...

A shiny brown coloured element ‘X’ on heating in air becomes black in colour. Name the element ‘X’ and the black coloured compound formed

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The element X is copper, Cu.
Black coloured coating is of copper oxide, CuO.
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MTG IIT JEE FOUNDATION-CHEMICAL REACTIONS AND EQUATIONS-NCERT SECTION
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  7. What does one mean by exothermic and endothermic reactions? Give examp...

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  8. Why is respiration considered an exothermic reaction? Explain.

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  9. Why are decomposition reactions called the opposite of combination rea...

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  11. What is the difference between displacement and double displacement re...

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  12. In the refining of silver, the recovery of silver from silver nitrate ...

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  13. What do you mean by a precipitation reaction? Explain by giving exampl...

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  14. Explain the following in terms of gain or loss of oxygen with two exam...

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  15. Explain the following in terms of gain or loss of oxygen with two exam...

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  18. Oil and fat containing food items are flushed with nitrogen. Why?

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