Science

A reddish-brown metal 'X', when heated in air, gives a black compound 'Y', which when heated in presence of H₂ gas gives 'X' back. 'X' is refined by the process of electrolysis; this refined form of 'X' is used in electrical wiring.
Identify 'X' and 'Y'. Draw a well-labeled diagram to represent the process of refining 'X'.

Electrolysis

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Answer

X is Copper [Cu] and in presence of oxygen it forms Y i.e., Copper oxide [CuO].

2Cu + O₂ ⟶ 2CuO

A reddish-brown metal 'X', when heated in air, gives a black compound 'Y', which when heated in presence of H2 gas gives 'X' back. 'X' is refined by the process of electrolysis; this refined form of 'X' is used in electrical wiring. Identify 'X' and 'Y'. Draw a well-labeled diagram to represent the process of refining 'X'. CBSE 2024 Science Class 10 Sample Question Paper Solved.

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Related Questions

The given reaction shows one of the processes to extract the metals like Iron and Manganese.
MnO₂ (s) + Al(s) ⟶ Mn(l) + Al₂O₃(s) + Heat
(a) Give reason why the above reaction is known as a thermite reaction.
(b) Identify the substance oxidised and reduced in the above reaction.
(c) Give a reason why Aluminium is preferably used in thermite reactions.
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