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Metallic core is more preferable than the sand core in the permanent mould casting.

Metallic core is more preferable than the sand core in the permanent mould casting. Correct Answer False

Metallic core is not preferable that the sand core, because the metallic core cannot be complex with undercuts and the like. Also, the metallic core is to be withdrawn immediately after solidification; otherwise, its extraction becomes very difficult because of its shrinkage.

Related Questions

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Reason R: The sand used in slow sand filters is finer than that in rapid sand filters
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