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  1. Which of the following has the highest boiling point
  2. For the reaction one of the mole of zinc dust with one mole of sulphuric acid
  3. Which of the following is not a ferromagnetic substance
  4. The set of quantom number for 19th electrons of chromium(Z=24) is
  5. A helium, molecule is two times heavier than a hydrogen molecule at 298 K