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Question

In which of the following, displacement reaction is possible?

A
Solution of AgNO3+ Coin of copper
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B
Solution of MgCl2+ Coin of Aluminium
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C
Solution of FeSO4+ Coin of Silver
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D
Solution of NaCl+ Coin of Copper
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Solution

The correct option is A Solution of AgNO3+ Coin of copper
2AgNO3(aq)+Cu(s)Cu(NO3)2(aq)+2Ag(s)

Copper metal displaces silver from its salt solution. Copper is placed below silver in the electrochemical series.

Thus, copper can reduce Ag+ ion.

Hence, option A is correct.

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