The correct answer is: C. 2.5 to 3.0
Specific gravity is the ratio of the density of a substance to the density of a reference substance. The reference substance is usually water, which has a density of 1 gram per cubic centimeter.
The specific gravity of most building stones lies between 2.5 and 3.0. This means that the density of most building stones is 2.5 to 3.0 times the density of water.
The specific gravity of a building stone is important because it affects the stone’s weight and strength. A stone with a high specific gravity will be heavier and stronger than a stone with a low specific gravity.
The specific gravity of a building stone can also affect its appearance. A stone with a high specific gravity will be more dense and have a more uniform appearance than a stone with a low specific gravity.
Here is a brief explanation of each option:
- Option A: 1.5 to 2.0. This is the specific gravity range for most common rocks. However, it is too low for most building stones.
- Option B: 2.0 to 2.5. This is the specific gravity range for some building stones, such as limestone and sandstone. However, it is too low for most common building stones.
- Option C: 2.5 to 3.0. This is the specific gravity range for most common building stones, such as granite and marble.
- Option D: 3.0 to 3.5. This is the specific gravity range for some building stones, such as basalt and gabbro. However, it is too high for most common building stones.