The property of sand due to which it evolves a great amount of steam and other gases is called collapsibility permeability cohessiveness adhesiveness
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permeability is the correct answer
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In the sand there are pores through which the gases and the moisture in the sand comes out this property is known as permeability.
Permeability means to removing air/gasses from the mold. Due to which chances of porosity in casting. Permeability word related to casting process. While molten metal/alloys pour in casting pattern, due hot gasses/air proper casting not produces.
Permeability means to removing air/gasses from the mold. Due to which chances of porosity in casting. Permeability word related to casting process. While molten metal/alloys pour in casting pattern, due hot gasses/air proper casting not produces.
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