Q. The most commonly used chemical for de-chlorination of water, is (Solved)
1. Sodium thiosulphate
2. Sodium bisulphate
3. Sodium sulphite
4. Sulphur-dioxide
- c. Sodium sulphite
1. Sodium thiosulphate
2. Sodium bisulphate
3. Sodium sulphite
4. Sulphur-dioxide