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Uses of some alkaline earth metals and their compounds

Answer Text:
Uses of some alkaline earth metals and their compounds
1. Magnesium is used in the manufacture of magnesium hydroxide which is used as an anti-acid medicine.
Reason: magnesium hydroxide is a non-toxic base.
2. A low-density alloy of magnesium and aluminium is used in aeroplanes construction.
3. Hydrated calcium sulphate (plaster of Paris) is used in hospitals to set fractured bones.
4. Cement is made by heating a mixture of calcium carbonate (limestone), clay and sand.
5. Calcium carbonate is used in the extraction of iron.
6. Calcium oxide (quicklime) is added tom acidic soils to raise pH for agricultural purposes.
7. Calcium nitrate is used as a nitrogenous fertilizer.
8. Magnesium oxide is used in the lining of furnaces.
9. Barium sulphate is used in the diagnosis of ulcers.
10. Barium nitrate is used to produce the green flame in fireworks.
11. Calcium carbonate is mixed with oil to make putty.