The metal which can be extracted from all three ores: dolomite,magnesite,and carnallite is:

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?

Which of the following metal is used in flash bulbs?

Milk of magnesia is

Give two uses of quick lime.

Which one of the following alkaline earth metal ions has the highest ionic mobility in its aqueous solution?