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[" A reusing materials."],[" Q."6" .Stat...

[" A reusing materials."],[" Q."6" .State reason for the following: "],[[" (i) Lemon is used for restoring the shine of tarnished copper vessels,"],[" (i) A metal sulphide is converted into its oxide to extract the metal from the "],[" (iii) Copper wires are used in electrical connections."]]

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State reason for the following : (i) Lemon is used for restoring the shine of tarnished copper vessels. (ii) A metal sulphide is converted into its oxide to extract the metal from the sulphide ore. (iii) Copper wire are used in electrical connections.

State reason for the following : (i) Lemon is used for restoring the shine of tarnished copper vessels. (ii) A metal sulphide is converted into its oxide to extract the metal from the sulphide ore. (iii) Copper wire are used in electrical connections.

State reasons for the following: Sulphide ore of a metal is first converted to its oxide to extract the metal from it.

Give reasons for the following : (i) Zinc can displace copper from copper sulphate solution. (ii) Silver articles become black after sometime when exposed to air. (iii) A metal sulphide is converted to its oxide to extract the metal from sulphide ore.

(A) Auto reduction of ore is used for the extraction of copper (R ) The sulphide ore of copper reacts with its oxide to the give the metal

Give suitable reasons for the following statements: A tarnished copper vessel regains its shine when rubbed with lemon.

Which one of the following compounds is used to reduce copper oxide during extraction of copper from sulphide ore -