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Multiple choice chemistry element, compound and chemical reaction materials around us materials around us and different types of houses matter and its states

The fluorescent tubes and neon sign bulbs glow due to the presence of ____________.

  1. charged particles

  2. high voltage

  3. high temperature

  4. colour
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A Correct answer
Explanation

When an application of high voltage is provided to the electrodes, the neon gas ionizes due to the flow of $e^-$ which thereby excite the neon gas atoms and cause them to emit light. In the case of fluorescent tubes, low-pressure mercury vapour is present which emits UV light when ionized.