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प्रश्न
You might have seen some huge colourful balloons flying high in malls. Those balloons are filled with nitrogen gas. Write the reason for filling nitrogen gas in balloons.
एक पंक्ति में उत्तर
उत्तर
The amount of nitrogen present in the air is about 78% so it will float in the air and will float upwards and it is also non-flammable gas.
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Importance of Nitrogen
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