Sorel's cement is:

The solubility in water of sulphates down the $Group \ 2$ ($Be$ group) is $Be > Mg > Ca > Sr > Ba$. This is due to

$A$ metal is burnt in air and the ash on moistening smells of $NH_3$. The metal is

Which of the following is the correct decreasing order of thermal stability of alkaline earth metal carbonates?

Addition of an oxalate solution to an aqueous solution containing a mixture of $Ba^{2+}$,$Sr^{2+}$,and $Ca^{2+}$ ions will precipitate:

Epsom salt is