Chemistry · Water Treatment
जल की स्थायी कठोरता को _____ मिलाकर दूर किया जा सकता है।
- 1क्लोरीन
- 2वाशिंग सोडा✓
- 3पोटेशियम परमैंगनेट
- 4ब्लीचिंग पाउडर
सही उत्तर देखें
वाशिंग सोडा
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