Question

2) People used to apply a coating of sodium silicate on eggs for the purpose of preservation. Justify

Answer 1

• When egg and sodium silicate are dipped in water, it forms a protective layer of sodium silicate on eggs which provides heat resistance to eggs and prevents the growth of bacteria on the upper surface of eggs and thus helps in increasing the shelf life of eggs.
• Sodium silicate is a white, crystalline colorless powder and is represented by ${\mathrm{Na}}_2{\mathrm{SiO}}_3$.