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Science Test Space
Class 10
Periodic Classifications of elements
Metallurgy of Aluminium, Copper and Iron
6.
Spot the correct statement: Copper Occurrence
Question:
4
m.
Spot the error and choose the correct statements:
1.
Aluminium is obtained in the native state as well as the combined state.
Cupric is obtained in the native state as well as the combined state.
Cuprite is obtained in the native state as well as the combined state.
Cuprous is obtained in the native state as well as the combined state.
Copper is obtained in the native state as well as the combined state.
2.
Copper gets coated with a brown layer of basic copper carbonate in the presence of \(CO_2\) and moisture.
Copper gots koated with a green layer of basic copper carbonate in the presence of \(CO_2\) and moisture.
Copper gets coated with a orange layer of basic copper carbonate in the presence of \(CO_2\) and moisture.
Copper gets coated with a black layer of basic copper carbonate in the presence of \(CO_2\) and moisture.
Copper gets coated with a green layer of basic copper carbonate in the presence of \(CO_2\) and moisture.
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