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Ionic Radii and Ionisation Enthalpy (Group 2)

Which of foll...

Question

Which of following salt contains two different metal atoms but gives test for only one in the aqueous solution?

A

Mohrs salt

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B

Potash alum

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C

Potassium ferrocyanide

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D

Carnallite

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Solution

The correct option is C Potassium ferrocyanide
A complex compound $K_{4} [F e (C N_{6})]$ which on ionisation only gives $K^{+}$ ion and $F e (C N_{6})^{-}$ ion.

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