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What is mixed with natural sand to make it semisynthetic sand?(a) Bentonite(b) Barelelne(c) Cubane(d) PrismaneThe question was posed to me in unit test.Question is from Molding Sands in chapter Molding and Core Sands of Casting-Forming-Welding I

Answer»

The correct choice is (a) Bentonite

For explanation: The ADDITION of a MATERIAL LIKE bentonite in its sand form, is because of the need to enhance the sand properties. Bentonite is MIXED with natural sand to MAKE it semisynthetic sand and thus improving its properties.



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