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  1. In hydrogen spectrum, the different line of Lyman series are present in
  2. A trend common to both for group I and VII elements in the periodic table
  3. In Dumas’ method of estimation of nitrogen 0.35g of an organic compound gave 55mL
  4. 40 mg of pure sodium peroxide is dissolved in 10L of distilled water. The pH of
  5. Which of the following metal is not ferromagnetic