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Which of the following properties must a material possess to be used in mold making?

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in Casting-Forming-Welding I by (687k points)
Which of the following properties must a material possess to be used in mold making?

(a) High refractoriness

(b) Chemical and thermal stability

(c) High permeability

(d) All of the mentioned

The question was posed to me by my school teacher while I was bunking the class.

The question is from Mold Materials topic in section Molding and Core Sands of Casting-Forming-Welding I

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Best answer
Correct option is (d) All of the mentioned

Explanation: A material must have all of the above properties so as to be a good mold making material.

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