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Discussion :: Chemistry

  1. The coloured discharge tubes for advertisement mainly contain

  2. A.

     Xenon

    B.

     Argon

    C.

     Helium

    D.

     Neon

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    Answer : Option D

    Explanation :

    Neon gives a distinct reddish-orange glow when used in either low-voltage neon glow lamps or in highvoltage discharge tubes or neon advertising signs. The red emission line from neon is also responsible for the well known red light of helium-neon lasers. Neon is used in a few plasma tube and refrigerant applications but has few other commercial uses.


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