Choose the correct statements from the following?

Options

A. Rhombic sulphur is blue in colour.
B. Rhombic sulphur is soluble in water but insoluble in organic solvents.
C. Rhombic and monoclinic sulphur have S6 molecules.
D. In Cyclo-`S_(6)` molecule, the ring adopts chair form.

Answer

To solve the question "Choose the correct statements from the following", we will evaluate each of the provided options regarding rhombic sulfur and cyclo S6 molecules.

### Step-by-step Solution:

1. **Evaluate Option 1: "Rhombic sulfur is blue in color."**
- Rhombic sulfur is primarily known for its yellow color. Therefore, this statement is incorrect.
- **Conclusion:** Option 1 is incorrect.

2. **Evaluate Option 2: "Rhombic sulfur is soluble in water, but insoluble in organic solvents."**
- Rhombic sulfur is not soluble in water; it is generally insoluble in both water and organic solvents. Thus, this statement is also incorrect.
- **Conclusion:** Option 2 is incorrect.

3. **Evaluate Option 3: "Rhombic and monoclinic sulfur have S6 molecules."**
- Both rhombic and monoclinic sulfur are known to have S8 molecules, not S6. Therefore, this statement is incorrect.
- **Conclusion:** Option 3 is incorrect.

4. **Evaluate Option 4: "In cyclo S6 molecule, the ring adopts chair form."**
- Cyclo S6 does indeed adopt a chair conformation, which is a correct statement. This is the only option that is correct.
- **Conclusion:** Option 4 is correct.

### Final Answer:
The correct statement is **Option 4: In cyclo S6 molecule, the ring adopts chair form.**