Q1027
The inert gas used as beacon light is
A.
Kr
B.
Ar
C.
He
D.
Ne
AnswerAnswer: Option D
Solution
Answer: Option D
Solution:
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.