Extraction of metals — task. Chemistry CBSE Live product, Class 10.

Identify the correct answer:

Which of the following is the incorrect statement?

The reduction process is used in the extraction of zinc, iron, and lead.
(\(K\), \(Na\), \(Ca\), \(Mg\) and \(Al\)) are never found as free elements in nature.
As oxygen is a low reactive element abundant on the earth, oxides can be found in the ores of few metals.
The metals at the top are highly reactive in the activity series and can be extracted by electrolysis.

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7. Extraction of metals