HomeGeneral KnowledgeThe method that cannot be used for removing permanent hardness of water is 45. The method that cannot be used for removing permanent hardness of water isBy Admin / September 20, 2025 A. adding sodium carbonate B. distillation C. adding caustic soda D. boiling ✅ The correct answer is option D.
1. In which field is the Dhanwantri Award given? Leave a Comment / Awards and Honours MCQs, General Knowledge / By Admin
2. Which of the following awards was conferred on Mrs. Kiran Bedi? Leave a Comment / Awards and Honours MCQs, General Knowledge / By Admin