$SrSO_4$ has a greater solubility in water than

Which of the following alkaline earth metals has the greatest tendency to form covalent compounds?

Heating a solid compound $X$ produces $CO_2$ gas and a residue. Adding water to this residue produces compound $Y$. Passing excess $CO_2$ gas through a solution of $Y$ produces a clear solution $Z$. Boiling $Z$ regenerates compound $X$. What is compound $X$?

Which of the following is true regarding alkaline earth metals?

Among the sulphates of alkaline earth metals,the solubilities of $BeSO_4$ and $MgSO_4$ in water,respectively,are

Gypsum is added to clinker during cement manufacture to: