Topics:
Animal Refresher, Poultry Science
Water Glass Used for Egg Preservation
Water glass used for egg preservation is:
- Sodium carbonate
- Sodium sulphate
- Sodium Chloride
- Sodium Silicate — Correct Answer
Explanation:
Correct Answer: Sodium Silicate
Water glass is the common name for Sodium Silicate (Na₂SiO₃). It is used in the water glass method of home egg preservation by sealing the pores of the eggshell.
How It Works
- Eggs are immersed in a solution of 1 part sodium silicate in 10 parts water.
- Silica from sodium silicate seals the pores of the eggshell, preventing entry of air and microorganisms, and loss of moisture and CO₂.
- Eggs can be preserved for approximately 1 month at room temperature by this method.
Comparison of Home Egg Preservation Methods
| Method | Chemical | Mechanism | Duration |
|---|---|---|---|
| Water glass method | Sodium Silicate (Na₂SiO₃) | Silica seals pores | 1 month (room temperature) |
| Lime water method | Ca(OH)₂ → CaCO₃ | CaCO₃ seals pores | 1 month (room temperature) |
| Cold storage (oil-coated) | Oil + refrigeration at 14°C | Oil seals pores + cold | 8 months |
| Cold storage (non-oil-coated) | Refrigeration at 14°C | Cold only | 6 months |
📚 About this Topic — Animal Refresher
This multiple choice question is from Animal Refresher, Poultry Science. It has 4 options with a detailed explanation of the correct answer. Practice more MCQs from Animal Refresher to strengthen your preparation.
