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JAMB Physics 2014 Question 47

Question 47

Conduction through Liquids and Gases

Which gas produces a pink coloured light in a discharge tube?

  1. A.Argon.
  2. B.Air.
  3. C.Neon.
  4. D.Mercury.
Show the answer and explanation

Answer: B (Air.)

Explanation

Air (mainly nitrogen) in a discharge tube glows pinkish. Neon gives an orange-red glow and mercury a bluish one.