Science · Chemistry
जल की स्थायी कठोरता दूर करने की मुख्य विधि क्या है?
- 1छानना
- 2चूना डालना
- 3परम्यूटिट विधि✓
- 4उबालना
सही उत्तर देखें
परम्यूटिट विधि
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