Question

Oxygen can be obtained from bleaching powder by:

Answer 1

Correct option is C. heating with a cobalt salt
$$\text{Oxygen can be obtained from bleaching powder by heating with a cobalt salt. Bleaching powder loses oxygen}$$ $$\text{in the presence of cobalt chloride catalyst.}$$

$$Reaction:$$

$$2CaOCl_2\xrightarrow{Co^{2+}}2CaCl_2+O_2$$

$$\text{Option C is correct.}$$