Which of the following statements is not correct ?

Question

$\begin {array} {1 1} (A)\;\text{Zinc chloride is used as a flux in soldering} \\ (B)\;\text{Zinc chloride mixed with zinc oxide is used in dental filling} \\ (C)\; \text{Zinc chloride is a toxic compound} \\ (D)\;\text{Zinc chloride is used in dry cells} \end {array}$