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Electrochemical Series

If a metal X ...

Question

If a metal X displaces Fe, Zn and Cu but not Al, then which of these can displace X?

A

Fe

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B

Al

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C

Cu

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D

Zn

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Solution

The correct option is B Al

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Which metal will displace hydrogen from acids but not water?

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, the metal which can displace all others from their salt solution is:

Q. Arrange the following metals in the order in which they displace each other from the solution of their salts.

A l, C u, F e, M g

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Q. Arrange the following metals in which they displace each other from the solutions of their salts in decreasing order:

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E_{A l^{3} + / A l}^{0} + - 1.66 V, E_{C u^{2} + / C u}^{0} = + 0.34 V

,

E_{F e^{2} + / F e}^{0} = - 0.44 V, E_{M g^{2} + / M g}^{0} = - 1.40 V

E_{Z n^{2} + / Z n}^{0} = - 0.76 V

Q. Which of the following is the correct conclusion. Also, give the reason?

Observation	I	II	III
Solution after reaction	Colourless	Colourless	Colourless
Metal Deposited	Zn	Cu	Fe

(a) Al is more reactive than Cu and Fe but less reactive than Zn
(b) Al is more reactive than Cu but less reactive than Zn and Fe
(c) Al is more reactive than Zn and Cu but less reactive than Fe
(d) Al is more reactive than Zn, Cu, Fe.

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