What is the common name of the compound CaOCI₂?

In addition to sodium hydrogen carbonate, baking powders contain a substance X. Name the substance X.

What is the role of substance X in the baking powder?

State two uses each of the following compounds:

(a) Sodium hydroxide

(b) Chlorine

(c) Hydrogen

(d) Hydrochloric acid

Name the raw material used for the preparation of plaster of Paris.

Which property of plaster of Paris is utilized in making casts for broken limbs in hospitals?