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प्रश्न
Name three noble gases present in the air. State their one industrial use
टीपा लिहा
उत्तर
Three noble gases present in the air are :
- Helium : It is used for filling weather observation balloons.
- Argon : It is used for filling electric bulbs at low pressure.
- Neon : It is used for making advertising glow tubes, used on big shops, hotels etc. at night.
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