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Which of the following moulds is used in slush casting, in which mould is broken to remove the castings?

Which of the following moulds is used in slush casting, in which mould is broken to remove the castings? Correct Answer Bronze mould

Bronze moulds are used in some cases of the slush casting when the better surface finish of the exterior part is required. When the metal hardens, the mould is broken to remove the castings. The inside of each cast retains molten texture while the exterior part is very smooth and shiny.

Related Questions

The casting processes that require expendable moulds are
P. Investment casting
Q. Low pressure casting
R. Shell moulding
S. Slush casting
A permanent mould is used in the slush casting with some variations for the making of castings.
The thickness of the metallic wall of the mould can be used to determine the wall thickness of the casting part in slush casting.
Dry sand moulds have high strength than the green sand moulds to form large castings.
Skin dried mould is preferable for large moulds over the dray sand moulds.
At the mould exit of a continuous caster, the metal consisting of a solidified shell with a liquid metal core exits at the rate of 35 kg S-1. Given that the latent heat of fusion is 3 × 105 J kg-1 and the total rate of heat removal by the mould is 4.2 × 106 W, the mass fraction of solid at the mould exit is . . . . . . . .
Assume that both while solid and liquid remain at the melting point, they are in the mould.
Statement (I): Both sand and metal moulds can be used for centrifugal casting. Statement (II): In this process, sand moulds are recommended when chilling tendency is to be prevented. 
Slush casting technique cannot be used for the production of high melting temperature metal castings.
In permanent mould casting, the mould is pre-heated to its operating temperature before the actual use of mould.
The chances of defects in the castings by cold chamber die casting are more than the castings produced by hot chamber die casting.