Answers

2015-06-08T16:58:00+05:30
The metals which are higher in the activity series change their places with the lower activity series material which help in the formation of new compound.
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2015-06-09T09:01:12+05:30
The replacement of metals helps them in the formations of new compounds.
Therefore, the metals, which are place in higher activity series replaceĀ 
the other metals, which are in lower activity series.
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