Give the uses of cement.

Which ion has the maximum complex-forming tendency?

Magnesium powder burns in air to give

$CO_2$ is passed through lime water. Initially,the solution turns milky and then becomes clear upon continued bubbling of $CO_2$. The clear solution is due to the formation of:

Which of the following alkaline earth metals does not exhibit colour when heated in a flame?

What happens when:
$(i)$ Magnesium is burnt in air
$(ii)$ Quick lime is heated with silica
$(iii)$ Chlorine reacts with slaked lime
$(iv)$ Calcium nitrate is heated?