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  1. Which one of the following on reaction with excess of MeMgI would give a tertiar
  2. A certain mass of gas occupies a volume of 300 c.c. at 27⁰C and 620 mm pressure
  3. The energy of an electron in the 3rd orbit of hydrogen atom is -E
  4. In Ramsay and Rayleigh’s isolation on noble gases from air,the nitrogen of the
  5. Which of the following is non-permissible?