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  1. In the final answer of the expression (29.2 – 20.2) (1.79 x 10⁵) / 1.37. The number
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  3. when a manganous salt is fused with a mixture of KNO₃ and solid NaOH
  4. Three dimensional molecules with cross links are formed in the case of a
  5. By which of the following processes permanent hardness of water can be removed