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Which sand is used for making ferrous and non-ferrous alloys?

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in Casting-Forming-Welding I by (687k points)
Which sand is used for making ferrous and non-ferrous alloys?

(a) Natural sand

(b) Synthetic sand

(c) Loam sand

(d) Refractory sand grain

The question was posed to me in an interview for internship.

The origin of the question is Molding Sands in section Molding and Core Sands of Casting-Forming-Welding I

1 Answer

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Right answer is (b) Synthetic sand

The explanation: Natural sands are used for casting ferrous and non-ferrous metals while synthetic sands are used for casting ferrous and non-ferrous alloys.

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