Previous year MCQs

General science UPPSC 2001 GS-I
Question

The gas used in discharge tubes for optical decoration and advertising is?

Answer & Solution

Answer: (Detailed Solution Below)

Option D: Neon

Detailed Solution:

The correct answer is “Neon”.
The gas used in discharge tubes for optical decoration and advertising is (4) Neon.

Neon is a noble gas with a low ionization voltage. This means it takes relatively little energy to excite the electrons in neon atoms, causing them to emit light.

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