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      Question

      Which odourless, colourless, tasteless and chemically

      unreactive gas was invented by Daniel Rutherford in 1772 and was independently isolated at the same time by CW Scheele and H Cavendish?
      A Nitrogen Correct Answer Incorrect Answer
      B Argon Correct Answer Incorrect Answer
      C Fluorine Correct Answer Incorrect Answer
      D Oxygen Correct Answer Incorrect Answer

      Solution

      The correct answer is A

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