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  1. Which one of the following is present as an active ingredient in bleaching
  2. The correct order of ionisation energy for comparing carbon, nitrogen and oxygen
  3. In a metal oxide, there is 20% oxygen by weight. its equivalent weight is
  4. Primary,secondary and tertiary amines may be separated by using
  5. The ionic radii of isoelectronic species N³⁻, O²⁻ and F⁻ are in the order