Consider the following statements: I. All soils can be identified in the field by visual examination 2. Fine-grained soils can be identified in the field by visual examination and touch. 3. Fine-grained soils can be identified in the field by dilatancy test 4. By visual examination, only coarse-grained soils can be identified Which of the above statements are correct?

Consider the following statements: I. All soils can be identified in the field by visual examination 2. Fine-grained soils can be identified in the field by visual examination and touch. 3. Fine-grained soils can be identified in the field by dilatancy test 4. By visual examination, only coarse-grained soils can be identified Which of the above statements are correct? Correct Answer 3 and 4 only

The soils having a size between 4.75 mm to 80 mm are considered as Coarse-grained soils and they are generally angular, flaky, or rounded shaped which can be easily predicted by visually.

While fine-grained soils have a very fine texture and small size particles which is difficult to identify them visually. Therefore, fine-grained soils are identified using the dilatancy test.

In dilatancy test, a wet soil sample is kept in the palm and observe the movement of water during shaking, squeezing (by closing hand)   and following criteria is used generally for classifying the fine-grained soil: