1.

Which one among the following is a double salt ?

Answer»

`K_(4)[Fe(CN)_(6)]`
`K_(2)SO_(4)* Al_(2)(SO_(4))_(3)* 2H_(2)O`
`CuSO_(4)* 5H_(2)O`
NaCl

Solution :Double salts are salts CONTAINING more than one cation or anion , OBTAINED by combination of two different salts which were CRYSTALLIZED in the same regular ionic lattice.


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