Match List I with List II and select the correct answer using the code given below the Lists :
| List I (Noble gas) |
List II (Use) |
|---|---|
| A. Argon | 1. In lights for advertising display |
| B. Neon | 2. Airport landing lights and in light houses |
| C. Krypton | 3. Light in photographer’s flash gun |
| D. Xenon | 4. In tungsten filament to last longer |
Code :
3 1 2 4
3 2 1 4
4 2 1 3
4 1 2 3
Answer is Wrong!
Answer is Right!
This question was previously asked in
UPSC NDA-1 – 2017
– Neon is famously used in “neon signs” for advertising displays, producing a characteristic red-orange glow when an electric current is passed through it (List II – 1).
– Krypton is used in various lighting applications, including some high-efficiency fluorescent lamps, halogen lamps, and is also used in some airport lighting systems and blended into other high-intensity discharge lamps (List II – 2 is a plausible use, although Xenon is more primary).
– Xenon is used in high-intensity discharge lamps such as those found in cinema projectors, high-end car headlights, airport landing lights, lighthouses (List II – 2), and in photographic flash lamps/guns (List II – 3).