Friday, September 28, 2012

Nitrogen Gas

                                  Nitrogen Gas

Nitrogen is the gas which is available in our atmosphere along with Oxygen, Hydrogen and Humidity. It is non toxic gas but of many use.
We all use Incandescent bulbs in our house. They give light and also heat. Inside the bulb, we can see a wire which is made of Tungsten metal. It is held between two points and through which electricity flows and it will glow thus we get light.
But inside a bulb, in the space found inside filled with Nitrogen gas. But when we put on the switch, sometimes bulb will not glow. This is because of melting of Tungsten wire due to excess heat . Then we replace the bulb with new one.
Nitrogen in soil is essential for plants. The fertilizers we use, contain this Nitrogen but not in gaseous form.

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