Question: @@Question : In a green - sand moulding process, uniform ramming leads to . ( a ) Less chance of gas porosity ( b )

@@Question : In a green-sand moulding process, uniform ramming leads to .
(a) Less chance of gas porosity(b) Uniform flow of molten metal into the mould cavity(c) Greater dimensional stability of the casting(d) Less sand expansion type of casting defect

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