Question

Which of the following gases is used in advertisment signs
(1) hydrogen
(2) oxygen
(3) nitrogen
(4) neon

Answer 1

Answer:

d option is the correct answer.

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Answer 2

Answer:

Neon

Explanation:

In the signage industry , neon signs are electric signs lighted by long luminous gas- discharge tubes that contain rarefied neon or other gases.

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