Building Stones MCQ with answer and solution

Concept

Testing stone hardness using Mohs scale

Formula

NONE

Step-by-step solution

1. Hardness measures a material's resistance to scratching, abrasion, or indentation. 2. Mohs scale of mineral hardness ranks minerals relative to scratch resistance on a scale from 1 to 10. 3. Thus, Mohs scale is standardly used to measure and test the relative hardness of stones. Answer: C

Explanation

The hardness of a stone measures its surface resistance to scratching and mechanical abrasion. Mohs scale ranks minerals from 1 to 10 based on their ability to scratch softer materials or be scratched by harder ones. Impact and crushing tests evaluate toughness and compressive strength, respectively, rather than surface hardness.

Why the other options are wrong

A) Impact strength tests the toughness of stones under sudden impacts. B) Abrasion strength measures wear resistance or attrition of stones. D) Crushing strength tests the ultimate compressive strength of stones.

Shortcut

Hardness of stones is measured on the Mohs Scale.

Common mistake

Confusing hardness testing using the Mohs Scale with toughness or wear resistance measured by impact or abrasion tests.