$ZnO$ when heated with $BaO$ at $1100\,^{\circ}C$ gives a compound. Identify the compound.

How is calcium hydroxide prepared?

Observe the following compounds.
$(i)$ $CaCO_3$
$(ii)$ $MgSO_4$
$(iii)$ $BaCl_2$
$(iv)$ $Sr(NO_3)_2$
$(v)$ $MgBr_2$
$(vi)$ $MgCl_2$
The oxoacid salts of group $II$ elements from the above list are

When $CO_2$ is passed into lime water,it turns milky. When an excess of $CO_2$ is passed,the milkiness disappears because:

In which of the following groups all the three members are of the alkaline earth metals family?

What is the product formed when $Ca(OH)_2$ reacts with $SO_2$?