Which of the following statement is inco...

Which of the following statement is incorrect? (1) The effective component of bleaching powder is O C l − (2) C a C O 3 is obtained when quick lime is heated with coke in an electric furnance (3) Anhydrous C a S O 4 is dead burnt plaster (4) B a C O 3 is obtained on fusion of B a S O 4 and N a 2 C O 3

The effective component of bleaching powder is `OCl^(-)`

`CaCO_(3)` is obtained when quick lime is heated with coke in an electric furnance

Anhydrous `CaSO_(4)` is dead burnt plaster

`BaCO_(3)` is obtained on fusion of `BaSO_(4) and Na_(2)CO_(3)`

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