Kerala State PSC Exam Model Paper 1

Question : 55 of 100

Marks: +1, -0

Shell molding is best described by which one of the following:

casting process in which the mold is a thin shell of sand binded by a thermosetting resin
casting operation in which the molten metal has been poured out after a thin shell has been solidified in the mold
casting operation used to make artificial sea shells?
sand casting operation in which the pattern is a shell rather than a solid form

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