Question

_____________ is well known as the expendable molding process.

(a) Core molding

(b) Hand molding

(c) Machine molding

(d) Shell molding

The question was posed to me in an international level competition.

The origin of the question is Core and Shell Moulding topic in division Moulding Machines & Special Moulding Processes of Foundry and Forging

Answer 1

The correct choice is (d) Shell molding

To explain: Shell molding uses a resin which is covered in sand to form a mold. This mold casting involves the use of non-reusable or temporary sand depending upon the casting to be made. Hence, it is known as expendable mould.