In a casting process, a vertical channel through which molten metal flows downward from pouring basin

Q. In a casting process, a vertical channel through which molten metal flows downward from pouring basin to runner for reaching the mold cavity is called

             (A) blister           (B) sprue                    (C) riser                     (D) pin hole

Ans: sprue                   

Sol: In a casting process, a vertical channel through which molten metal flows downward, from the pouring basin to the runner for reaching the mould cavity is called sprue.