Slaked lime $[Ca(OH)_2]$ is used in the manufacture of:

Which of the alkaline earth metal halides given below is essentially covalent in nature?

Which of the following properties of the alkaline earth metals increase from $Be$ to $Ba$?
$(i)$ Atomic radius
$(ii)$ Ionisation energy
$(iii)$ Nuclear charge

Describe the importance of the following:
$(i)$ limestone
$(ii)$ cement
$(iii)$ plaster of Paris.

When the ash obtained by burning a metal in air is moistened,it gives the smell of $NH_3$. Which metal is it?

Which of the following gives a green color in the flame test?