Question

High moisture content decreases the permeability of the molding sand and it can be detected by moisture content test.

(a) True

(b) False

The question was posed to me in an online interview.

My doubt is from Sand Control Tests topic in division Pattern Materials & Moulding Sand Tests of Foundry and Forging

Answer 1

Correct choice is (a) True

To explain: The molding sand has moisture as a dominant property. It is defined as the amount of water present in the molding sand. As the low moisture content in the molding sand does not develop strength properties, the high moisture content decreases permeability.