Q. 24.0( 3 Votes )
On the basis of t A. X and Z
B. Y and Z
C. Z and X
D. Z and Y
From the sets of reactions i, ii, iii, it can be observed from i and ii that X is more reactive than Y and hence it displaces Y from its salt.
From reaction iii it can be observed that Z is more reactive than X as it displaces X from its salt.
So the most reactive element is Z and the least reactive is Y.
So correct answer is d [Z and Y].
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