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Electrochemical Series

Each of the t...

Question

Each of the three metals X, Y and Z were put in turn into aqueous solution of the other two.
X + Salt of Y (or Z) $⟶$ Y (or Z) + Salt of X. Which observation is probably incorrect?

A

Y + Salt of X

⟶

No action observed

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B

Y + Salt of Z

⟶

Z + Salt of Y

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C

Z + Salt of X

⟶

X + Salt of Z

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D

Z + Salt of Y

⟶

No action observed

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Solution

The correct option is B Z + Salt of X $⟶$ X + Salt of Z
According to given conditions,
X has higher tendency to oxidise so it is above Z in electrochemical series and thus, Z cannot displace X from its salt.

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