Chemistry
The inexpensive and commonly used variety of glass is called soda glass.

is made using soda(sodium carbonate)
was initially used for storing sodium carbonate
was used initially for making bottles of soda(carbonated drink)
is made using soda lime

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Chemistry
The open "Sigrees" or coal stoves often require fanning to sustain burning because of

Accumulation of smoke and dust over the sigrees
Tendency of carbon dioxide to form a layer along with dust smoke
Lack of oxygen in the surroundings of sigrees
Interrupted release of moisture from the material

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