Question

on the basis of sequence of the reaction identify the most and least reactive element​

Answer 1

In the first case, element A is much reactive than B as A displaces B from it's position.

In the second case, C is much reactive than A as C displaces A from it's position.
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Answer 2

In the first reaction A displaces B from its solution. Which means that A is more reactive than B

A > B

In second reaction C displaces A from its solution. Which means that C is more reactive than A

C > A

since C > A  And  A > B

So the sequence will be

C > A > B

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