Answer the following case-based question:
There are so many important compounds known, which have some characteristic properties like Bleaching powder used as an disinfectant, POP used for joining fractured bones, Baking powder used for making dhoklas and baking cake, Sodium chloride as a table salt etc . These properties make these compounds very useful in our daily routine.
a. The chemical name of bleaching powder is
b. The ratio of the water molecule in plaster of paris and gypsum is
c. Baking powder is
d. Washing soda is prepared by: