Question

What is the breadth size range of a clay particle?

(a) 0.01-1 micrometres

(b) 0.02-2 micrometres

(c) 0.03-3 micrometres

(d) 0.04-4 micrometres

The question was asked in class test.

This is a very interesting question from Molding Sands Binders topic in section Molding and Core Sands of Casting-Forming-Welding I

Answer 1

Correct answer is (a) 0.01-1 micrometres

For explanation I would say: The particles of clay are very small and need high precision microscopes to determine its size. Clay particles in their breadth have a particle size range in between 0.01 micrometres to 1 micrometres.