Question

An electric bulb is filled with a gas named

• A. oxygen.
• B. ozone.
• C. hydrogen.
• D. nitrogen.

Answer 1

The correct option is D

nitrogen.

Explanation for the correct option(s): (d) nitrogen

• An electric bulb is filled with a small amount of gas such as nitrogen or argon as they are chemically inactive.
• These inert gases prevent oxidation and evaporation of the filament and hence the life of the filament of the bulb increases

Explanation for the incorrect option(s):

(a) oxygen

Oxygen is a reactive gas, therefore oxygen cannot be used.

(b) ozone

Nonreactive gases are used in the bulb. Ozone is a very reactive gas.

(c) hydrogen

Hydrogen is used as a flammable gas. Hence, it is not suitable for bulbs.

Final answer: Thus, option (d) is correct.