Some salts although containing two different metallic elements give test for one of them in solution. Such salts are:

Options

A. (a) double salts
B. (b) complex salts
C. (c) normal salts
D. (d) none of these

Answer

B

Explanation

Complex compounds or complex salts containing two different metallic elements give test for only one element. For example, potassium hexacyanoferrate (II), `K_4[Fe(CN)_6]` gives test only for `K^(+)` ions and not for `Fe^(2+)` ions.
`K_4 [Fe(CN)_6] hArr 4K^(+) +[Fe(CN)_6]^(4-)`