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 3 of 15.
Bitu said:
1 decade ago
Nitrogen is an highly unreactive gas. Thus it is used to fill spaces in packets. However, it is argon which provides an inert atmosphere in bulbs due to its complete valence shell.
Vivek Anand said:
5 years ago
There are two types of constructions of incandescent light bulbs, one entailing a low vacuum and one that is filled with the inert gas. The gas used is either Nitrogen or Argon.
Deepak sharma said:
7 years ago
Because nitrogen gas very low temperature (very cool glass) and tungsten has very high temperature. Nitrogen gas prevent the tungsten melt there for nitrogen is used in bulb.
Hima said:
1 decade ago
Oygen is not used because it burns the filament in the bulb, made of mercury so except oxygen we can use other gases but commonly inert gases are used to fill the bulbs.
Pala said:
1 decade ago
Filling a bulb with argon would be a costly process, whereas nitrogen is called inert as it does not react easily (78% nitrogen is present in our atmosphere).
Vijay kumar said:
1 decade ago
Incandescent light bulbs are filled with an inert gas like nitrogen, argon, or krypton - So that the filament doesn't catch fire. Early ones were a vacuum.
Malay said:
5 years ago
Incandescent light bulbs are filled with an inert gas like nitrogen, argon, or krypton - so that the filament doesn't catch fire. Early ones were a vacuum.
(1)
Lalji pandey said:
1 decade ago
Nitrogen is cheaper and less reactive due to half filled p orbital but inert gases are costly used in costly cfl etc option of nitrogen is present also.
Ayush said:
5 years ago
Filling a bulb with an inert gas such as argon or nitrogen slows down the evaporation of the tungsten filament compared to operating it in a vacuum.
Aparna said:
1 decade ago
Helium gas is also used in bulbs except for nitrogen and argon because it is a noble gas. It does not react because its outermost shell is filled.
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