The correct answer is: B. The compressive strength of the stone.
Smith’s test is a non-destructive test used to determine the compressive strength of stone. It is a simple test that can be performed in the field or laboratory. The test involves applying a load to a cylindrical specimen of stone until it fails. The compressive strength is then calculated from the load and the cross-sectional area of the specimen.
The compressive strength of stone is an important property for a number of reasons. It is used to design foundations and other structures that support loads. It is also used to assess the quality of stone for use in construction.
The other options are incorrect because:
- A. The presence of soluble matter of stone is not determined by Smith’s test.
- C. The hardness of stone is determined by other tests, such as the Mohs scale of hardness.
- D. The toughness of stone is determined by other tests, such as the Izod impact test.