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Extracting Metals Low in Reactivity Series

The oxides of...

Question

The oxides of which of the following metals can be reduced to metals by heating:

A

Hg

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B

Al

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C

Zn

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D

Na

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Solution

The correct option is A
Hg

Metals which are low in activity series are very less reactive. Therefore they don't make strong bonds with other elements and can be reduced by heating.

Mercury is low in the activity series, but zinc is in the middle and sodium and aluminium are highly reactive.

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