$A$ mixture of $MgCl_2$ and $MgO$ is called

The difference in the number of water molecules in gypsum and plaster of Paris is:

Give the uses of alkaline earth metals.

Which of the following statements is false?

State whether the following statements are True or False:
$(1)$ Plaster of Paris is used to join fractured bones and keep them immobilized.
$(2)$ Calcium carbonate and soil are the raw materials for cement production.

Which of the following elements is chemically most reactive?