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Uses of Alkali metals and their compounds.

Answer Text:
Uses of Alkali metals and their compounds.
1. Sodium is used in the manufacture of sodium cyanide for gold extraction.
2. Lithium is used in the manufacture of special high strength glasses and ceramics.
3. Lithium compounds are used in the manufacture of dry cells for use in mobile phones, laptops, stopwatches, and zero emission electric vehicles.
4. A molten mixture of sodium and potassium is used as a coolant in nuclear reactors.
5. Sodium vapour is used to produce the yellow glow in street ad advertisement lights.
6. Molten sodium is used as a reducing agent in the extraction of titanium.
Equation: #Na(l) + TiCl_4(g) → Ti(s) + 4NaCl(l)#
7. Sodium chloride is used as a food additive.
8. A mixture of sodium hydroxide (caustic soda) and
carbon disulphide is used in the manufacture of artificial silk called rayon.