By which of the following process deionized water can be obtained

Options

A. Calgon's process
B. synthetic Resin's method
C. clark's method
D. permutit

Answer

To determine the process by which deionized water can be obtained, we will analyze the given options and focus on the Synthetic Resins Method, which is known for its effectiveness in water treatment.

### Step-by-Step Solution:

1. **Understanding Deionized Water**:
- Deionized water is water that has had its mineral ions removed, such as sodium, calcium, iron, and copper. This process is crucial for various applications, including laboratory use and industrial processes.

2. **Reviewing the Given Options**:
- The options provided are:
- A) Calgan's process
- B) Synthetic resins method
- C) Clarke's method
- D) Permuted

3. **Analyzing the Synthetic Resins Method**:
- The Synthetic Resins Method involves the use of cation exchange resins. These resins are composed of large organic molecules that contain sulfonic acid groups (–SO3H).
- When hard water (which contains calcium and magnesium ions) is treated with these resins, the cation exchange process occurs.

4. **Cation Exchange Process**:
- The cation exchange resin (R-SO3H) exchanges hydrogen ions (H+) for the cations present in hard water (like Ca²⁺ and Mg²⁺).
- The reaction can be represented as:
\[ R-SO3H + M^{2+} \rightarrow R-SO3M + 2H^+ \]
- Here, M²⁺ represents the cations from hard water (e.g., Ca²⁺ or Mg²⁺), and R-SO3M is the resin with the exchanged cation.

5. **Final Outcome**:
- After the cation exchange, the water becomes softened, and the unwanted ions are removed, leading to deionized water.
- This method is efficient and widely used for producing deionized water.

6. **Conclusion**:
- Based on the analysis, the correct answer to the question is **B) Synthetic Resins Method**.