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# Aqueous solution of carnalite gives positive test for

$\begin{array}{1 1}(a)\;\text{Chloride ions only}\\(b)\;\text{Potassium ions only}\\(c)\;\text{Potassium and chloride ions only}\\(d)\;\text{Potassium,magnesium and chloride ions}\end{array}$

Carnalite is $KCl.MgCL_2.6H_2O$.In water solution it contains $K^+$ ions,$Mg^{2+}$ ions and $Cl^-$ ions.
Hence (d) is the correct answer.