A: Ultrapure metals are obtained by zone refining.
R: Van arkel method is used for purification of titanium

Options

A. If both Assertion & Reason are true and the reason is the correct explanation of the assertion, then mark (1).
B. If both Assertion & Reason are true but the reason is not the correct explanation of the assertion, then mark (2)
C. If Assertion is true statement but Reason is false, then mark
D. If both Assertion and Reason are false statements, then mark (4)

Answer

To analyze the statements provided in the question, we will evaluate both parts: A and R.

### Step-by-Step Solution:

1. **Understanding Statement A**:
- The statement A claims that "Ultrapure metals are obtained by zone refining."
- **Explanation**: Zone refining is a technique used to purify metals. It involves melting a small region of the metal and moving this molten zone along the solid metal. Impurities are more soluble in the molten phase and are thus pushed ahead of the solidification front, leading to a more purified solid metal.
- **Conclusion**: This statement is **True**.

2. **Understanding Statement R**:
- The statement R claims that "Van Arkel method is used for purification of titanium."
- **Explanation**: The Van Arkel method is indeed a process used for the purification of titanium. It involves the formation of titanium iodide, which is then decomposed to yield pure titanium. This method is particularly effective for obtaining high-purity titanium.
- **Conclusion**: This statement is also **True**.

3. **Final Evaluation**:
- Both statements A and R are true. However, it is important to note that while both methods are used for purification, they are different processes. Zone refining is not specifically used for titanium, as the Van Arkel method is more commonly associated with titanium purification.

### Final Conclusion:
- Both statements A and R are true, but they refer to different methods of purification.

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