Question

What is the dry tensile strength of core sand mixture for general purpose?

(a) 15 kg/cm^2

(b) 16 kg/cm^2

(c) 17 kg/cm^2

(d) 18 kg/cm^2

This question was addressed to me during an interview.

My question comes from Preparation of Core Mix in division Molding and Core Sands of Casting-Forming-Welding I

Answer 1

Correct choice is (c) 17 kg/cm^2

For explanation I would say: There are various properties of core sand mixture which widely depend on many factors. The dry tensile strength of core sand mixture for general purpose is 17 kg/cm^2.