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The position of some metals in the elect...

The position of some metals in the electrochemical series in decreasing electropositive character is given as `Mg gt Al gt Zn gt Cu gt Ag`.What will happen if a copper spoon is used to stir a solution of aluminium nitrate:

A

The spoon will get coated with aluminium

B

An alloy of copper and aluminium is formed

C

The solution becomes blue

D

There is no reaction

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The correct Answer is:
D
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Three electrolytic cells A,B and C containing solutions of zinc sulphate, silver nitrate and copper sulphate, respectively are connected in series. A steady current of 1.5 A was passed through them until 1.45g of silver deposited at the cathode of cell B. How long did the current flow? What mass of copper and zinc were deposited in the concerned cells? ( Atomic mass of Ag= 108, Zn = 65.4, Cu = 63.5)

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