North Carolina Building Contractor License Practice Exam

Generally speaking, which type of rock is the easiest to rip?

1. Granite

2. Sandstone

3. Basalt

4. Softer rock

The correct answer is: Softer rock

The option that refers to "softer rock" is correct because it encompasses a category of materials that are generally less dense and easier to break apart compared to harder rocks such as granite, sandstone, or basalt. Softer rocks, such as limestone or shale, tend to have a lower compressive strength, making them more susceptible to mechanical processes like ripping. In construction and excavation, the ease of ripping rock is crucial when considering the equipment and methods that will be used. Softer materials typically require less powerful machinery and can be processed more efficiently, which can reduce costs and time on a project. Granite, sandstone, and basalt are all classified as harder types of rock, possessing greater durability and resistance to breaking under stress. Therefore, in a practical application, these harder rocks would require specialized equipment and techniques for removal, making them less desirable for certain construction projects where efficiency and speed are key.