General Knowledge - General Science - Discussion
Discussion Forum : General Science - Elements and Metals (Q.No. 7)
7.
The gas usually filled in the electric bulb is
Discussion:
146 comments Page 9 of 15.
RAJ KUMAR SINGH said:
1 decade ago
Nitrogen due to its stability due to its inert nature as well as less inflammable nature than oxygen.
Kulvinder said:
1 decade ago
Because nitrogen is inert gas doesn't easily reaction.
RISHABH said:
1 decade ago
We can use any of inert gases, but we use nitrogen cause this is least reactive & cheaper than other gases.
Santhsh.K.P said:
1 decade ago
I thing its uses neon and argon.
Sujeet said:
1 decade ago
Why don't we use vaccum in bulbs, it could be more effective and may be much cheaper.
Yogesh said:
1 decade ago
Nitrogen gas is less reactive than other given gases. Generally we use Argon & krypton is because they are inert gases. These are noble gases. Which doesn't react easily.
These gases are filled in bulb because filament present in bulb is Tungsten. These gases increase life of Tungsten filament. Tungsten has melting point above 3000 degree C.
Hence it is use in electric bulb. Nitrogen is 78% abundant on earth. So it is used in electric bulb.
These gases are filled in bulb because filament present in bulb is Tungsten. These gases increase life of Tungsten filament. Tungsten has melting point above 3000 degree C.
Hence it is use in electric bulb. Nitrogen is 78% abundant on earth. So it is used in electric bulb.
Chandrasekhar.reddy said:
1 decade ago
N2 prevents combustion of tungsten, that's why it is used.
Parveen Nehra said:
1 decade ago
Why insert nitrogen gas in bulb. But 93% argon gas?
Nakul sharma said:
1 decade ago
The bulb is filled with an inert gas such as argon (93%) and nitrogen (7%) to reduce evaporation of the filament and prevent its oxidation at a pressure of about 70 kPa (0.7 atm).
Early lamps, and some small modern lamps used only a vacuum to protect the filament from oxygen.
Early lamps, and some small modern lamps used only a vacuum to protect the filament from oxygen.
Romy Khan said:
1 decade ago
It is Argon. Because it has most inert property. But according to options nitrogen is correct. :-).
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