Question

3. The nitrogen gas is filled in electric bulb is due to,
A. to get more sparkle
B. to reduce the heat
C. to prevent the bulb from collapsing inside D. for long durability of tungsten wire
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Answer 1

Explanation:

C. To prevent the bulb from cracking

Answer 2

Answer:

C.C. to prevent the bulb from collapsing inside

Explanation:

• Nitrogen is used in electric bulbs since the gas provides an inert atmosphere.
• The bulb has tungsten filament which gets oxidised easily and nitrogen is required to makthe environment inert.

Thus, the reason that Nitrogen is colourless, odourless and tasteless gas is incorrect to explain why nitrogen is used in electric bulbs.

Hence, the correct option is (c).