Which of the following pairs of cations ...

Which of the following pairs of cations cannot be separated by using dilute HCl?

A

`Ag^(+), Cu^(2+)`

B

`Ag^(+), Hg_(2)^(2+)`

C

`Ag^(+), Pb^(2+)`

D

`Pb^(2+), Hg_(2)^(2+)`

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The correct Answer is:

A

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