Which of the following statement is incorrect?

Options

A. The effective component of bleaching powder is `ocl^-`.
B. `CaCO_3` is obtained when quick lime is heated with coke in an electric furnace.
C. Anhydrous `CaSO_4` is dead burnt plaster.
D. `BaCO_3` is obtained on fusion of `BaSO_4` and `Na_22CO_3`.

Answer

D