Why is ion exchange process preffered over permutit process for the purification of water?

Explanation

### Step-by-Step Solution

1. **Understanding the Ion Exchange Process**:
- The ion exchange process involves the removal of both cations (positively charged ions) and anions (negatively charged ions) from water. This is done by exchanging these ions with other ions that are bound to a resin.
- This process effectively reduces the hardness of water, making it suitable for various applications.

2. **Understanding the Permutit Process**:
- The permutit process, also known as zeolite softening, primarily focuses on removing cations, particularly calcium and magnesium ions, which cause hardness in water.
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