High refractoriness of a material refers to its __________(a) Slipperyness of the material(b) Chemical strength towards other material(c) Strength to withstand at high temperature(d) Ability to get dissolved in molten metalI had been asked this question during an online exam.This question is from Mold Materials topic in section Molding and Core Sands of Casting-Forming-Welding I

High refractoriness of a material refers to its __________(a) Slippery

1.	High refractoriness of a material refers to its __________(a) Slipperyness of the material(b) Chemical strength towards other material(c) Strength to withstand at high temperature(d) Ability to get dissolved in molten metalI had been asked this question during an online exam.This question is from Mold Materials topic in section Molding and Core Sands of Casting-Forming-Welding I
Answer» The correct option is (c) Strength to withstand at high temperature To explain: Refractoriness is the resistance to self deformation at high working TEMPERATURES. A material must POSSESS such PROPERTY in order to withstand the temperature of molten metal during CASTING.

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