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Q. |
The inert gas used as beacon light is - |
A. | Kr |
B. | Ar |
C. | He |
D. | Ne |
Answer» D. Ne | |
Explanation: Neon is used in neon discharge lamps and advertising signs because the neon lights are visible from long distances. Since the light of neon signs has a better penetrating power through fog and mist, the neon signs are also used in beacon lights for the safety of air and sea navigation. |
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