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

Which of the following statements is incorrect with reference to alkaline earth metals?

What is the basic composition and origin of cement?

The tendency of forming chloride hydrates of alkaline earth metals is in the order of

The compound $A$ on heating gives a colourless gas and a residue that is dissolved in water to obtain $B$. Excess of $CO_2$ is bubbled through aqueous solution of $B$,$C$ is formed which is recovered in the solid form. Solid $C$ on gentle heating gives back $A$. The compound $A$ is:

Which of the following is an amphoteric hydroxide?