Permanent hardness of water, due to sulphates of the metal, can be destroyed by the use of:
دھات کے سلفیٹ کی وجہ سے پانی کی مستقل سختی کو ان کے ۔۔۔۔۔ استعمال سے تباہ کیا جا سکتا ہے
Answer: Zeolites
Explanation
Zeolites are microporous, aluminosilicate minerals commonly used as commercial adsorbents and catalysts.
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